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Finding the Fourth Proportional to 138,248.90, 207,384.87 and 37,061.38

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Solution

The fourth proportional to 138,248.90, 207,384.87 and 37,061.38 is: 55,595.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,248.90 : 207,384.87 = 37,061.38 : x
  2. Step 2: Convert to fraction form
    138,248.90/207,384.87 = 37,061.38/x
  3. Step 3: Cross multiply
    138,248.90x = 207,384.87 × 37,061.38
  4. Step 4: Simplify right side
    138,248.90x = 7,685,968,436.40
  5. Step 5: Solve for x
    x = 7,685,968,436.40/138,248.90
  6. Step 6: Final answer
    x = 55,595.15

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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.