Home / 98,778.66-136,041.02-85,345.62

Finding the Fourth Proportional to 98,778.66, 136,041.02 and 85,345.62

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Solution

The fourth proportional to 98,778.66, 136,041.02 and 85,345.62 is: 117,540.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,778.66 : 136,041.02 = 85,345.62 : x
  2. Step 2: Convert to fraction form
    98,778.66/136,041.02 = 85,345.62/x
  3. Step 3: Cross multiply
    98,778.66x = 136,041.02 × 85,345.62
  4. Step 4: Simplify right side
    98,778.66x = 11,610,505,197.33
  5. Step 5: Solve for x
    x = 11,610,505,197.33/98,778.66
  6. Step 6: Final answer
    x = 117,540.62

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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.