Home / 100,572.27-138,728.16-59,708.66

Finding the Fourth Proportional to 100,572.27, 138,728.16 and 59,708.66

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Solution

The fourth proportional to 100,572.27, 138,728.16 and 59,708.66 is: 82,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,572.27 : 138,728.16 = 59,708.66 : x
  2. Step 2: Convert to fraction form
    100,572.27/138,728.16 = 59,708.66/x
  3. Step 3: Cross multiply
    100,572.27x = 138,728.16 × 59,708.66
  4. Step 4: Simplify right side
    100,572.27x = 8,283,272,624.57
  5. Step 5: Solve for x
    x = 8,283,272,624.57/100,572.27
  6. Step 6: Final answer
    x = 82,361.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.