Home / 102,902.32-141,963.40-67,079.76

Finding the Fourth Proportional to 102,902.32, 141,963.40 and 67,079.76

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Solution

The fourth proportional to 102,902.32, 141,963.40 and 67,079.76 is: 92,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,902.32 : 141,963.40 = 67,079.76 : x
  2. Step 2: Convert to fraction form
    102,902.32/141,963.40 = 67,079.76/x
  3. Step 3: Cross multiply
    102,902.32x = 141,963.40 × 67,079.76
  4. Step 4: Simplify right side
    102,902.32x = 9,522,870,800.78
  5. Step 5: Solve for x
    x = 9,522,870,800.78/102,902.32
  6. Step 6: Final answer
    x = 92,542.82

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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.