Home / 137,561.19-189,839.19-77,132.55

Finding the Fourth Proportional to 137,561.19, 189,839.19 and 77,132.55

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Solution

The fourth proportional to 137,561.19, 189,839.19 and 77,132.55 is: 106,445.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,561.19 : 189,839.19 = 77,132.55 : x
  2. Step 2: Convert to fraction form
    137,561.19/189,839.19 = 77,132.55/x
  3. Step 3: Cross multiply
    137,561.19x = 189,839.19 × 77,132.55
  4. Step 4: Simplify right side
    137,561.19x = 14,642,781,815.78
  5. Step 5: Solve for x
    x = 14,642,781,815.78/137,561.19
  6. Step 6: Final answer
    x = 106,445.59

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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.