Home / 118,778,856.30-178,168,284.45-99,646,980.30

Finding the Fourth Proportional to 118,778,856.30, 178,168,284.45 and 99,646,980.30

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Solution

The fourth proportional to 118,778,856.30, 178,168,284.45 and 99,646,980.30 is: 149,470,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,778,856.30 : 178,168,284.45 = 99,646,980.30 : x
  2. Step 2: Convert to fraction form
    118,778,856.30/178,168,284.45 = 99,646,980.30/x
  3. Step 3: Cross multiply
    118,778,856.30x = 178,168,284.45 × 99,646,980.30
  4. Step 4: Simplify right side
    118,778,856.30x = 17,753,931,530,673,944
  5. Step 5: Solve for x
    x = 17,753,931,530,673,944/118,778,856.30
  6. Step 6: Final answer
    x = 149,470,470.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.