Home / 138,569.40-207,335.10-98,680.60

Finding the Fourth Proportional to 138,569.40, 207,335.10 and 98,680.60

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Solution

The fourth proportional to 138,569.40, 207,335.10 and 98,680.60 is: 147,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,569.40 : 207,335.10 = 98,680.60 : x
  2. Step 2: Convert to fraction form
    138,569.40/207,335.10 = 98,680.60/x
  3. Step 3: Cross multiply
    138,569.40x = 207,335.10 × 98,680.60
  4. Step 4: Simplify right side
    138,569.40x = 20,459,952,069.06
  5. Step 5: Solve for x
    x = 20,459,952,069.06/138,569.40
  6. Step 6: Final answer
    x = 147,651.30

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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.