Home / 138,398.30-207,565.59-54,160.46

Finding the Fourth Proportional to 138,398.30, 207,565.59 and 54,160.46

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Solution

The fourth proportional to 138,398.30, 207,565.59 and 54,160.46 is: 81,228.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,398.30 : 207,565.59 = 54,160.46 : x
  2. Step 2: Convert to fraction form
    138,398.30/207,565.59 = 54,160.46/x
  3. Step 3: Cross multiply
    138,398.30x = 207,565.59 × 54,160.46
  4. Step 4: Simplify right side
    138,398.30x = 11,241,847,834.57
  5. Step 5: Solve for x
    x = 11,241,847,834.57/138,398.30
  6. Step 6: Final answer
    x = 81,228.22

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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.