Home / 138,155.40-207,233.10-49,411.80

Finding the Fourth Proportional to 138,155.40, 207,233.10 and 49,411.80

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Solution

The fourth proportional to 138,155.40, 207,233.10 and 49,411.80 is: 74,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,155.40 : 207,233.10 = 49,411.80 : x
  2. Step 2: Convert to fraction form
    138,155.40/207,233.10 = 49,411.80/x
  3. Step 3: Cross multiply
    138,155.40x = 207,233.10 × 49,411.80
  4. Step 4: Simplify right side
    138,155.40x = 10,239,760,490.58
  5. Step 5: Solve for x
    x = 10,239,760,490.58/138,155.40
  6. Step 6: Final answer
    x = 74,117.70

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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.