Home / 161,385.36-222,657.12-115,406.16

Finding the Fourth Proportional to 161,385.36, 222,657.12 and 115,406.16

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Solution

The fourth proportional to 161,385.36, 222,657.12 and 115,406.16 is: 159,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,385.36 : 222,657.12 = 115,406.16 : x
  2. Step 2: Convert to fraction form
    161,385.36/222,657.12 = 115,406.16/x
  3. Step 3: Cross multiply
    161,385.36x = 222,657.12 × 115,406.16
  4. Step 4: Simplify right side
    161,385.36x = 25,696,003,215.86
  5. Step 5: Solve for x
    x = 25,696,003,215.86/161,385.36
  6. Step 6: Final answer
    x = 159,221.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.