Home / 138,649.12-207,957.62-38,817.30

Finding the Fourth Proportional to 138,649.12, 207,957.62 and 38,817.30

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Solution

The fourth proportional to 138,649.12, 207,957.62 and 38,817.30 is: 58,221.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,649.12 : 207,957.62 = 38,817.30 : x
  2. Step 2: Convert to fraction form
    138,649.12/207,957.62 = 38,817.30/x
  3. Step 3: Cross multiply
    138,649.12x = 207,957.62 × 38,817.30
  4. Step 4: Simplify right side
    138,649.12x = 8,072,352,088.95
  5. Step 5: Solve for x
    x = 8,072,352,088.95/138,649.12
  6. Step 6: Final answer
    x = 58,221.44

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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.