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Finding the Fourth Proportional to 138,482.80, 207,772.80 and 59,621.20

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Solution

The fourth proportional to 138,482.80, 207,772.80 and 59,621.20 is: 89,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,482.80 : 207,772.80 = 59,621.20 : x
  2. Step 2: Convert to fraction form
    138,482.80/207,772.80 = 59,621.20/x
  3. Step 3: Cross multiply
    138,482.80x = 207,772.80 × 59,621.20
  4. Step 4: Simplify right side
    138,482.80x = 12,387,663,663.36
  5. Step 5: Solve for x
    x = 12,387,663,663.36/138,482.80
  6. Step 6: Final answer
    x = 89,452.72

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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.