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Finding the Fourth Proportional to 105,385.20, 158,104.80 and 60,932.40

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Solution

The fourth proportional to 105,385.20, 158,104.80 and 60,932.40 is: 91,414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,385.20 : 158,104.80 = 60,932.40 : x
  2. Step 2: Convert to fraction form
    105,385.20/158,104.80 = 60,932.40/x
  3. Step 3: Cross multiply
    105,385.20x = 158,104.80 × 60,932.40
  4. Step 4: Simplify right side
    105,385.20x = 9,633,704,915.52
  5. Step 5: Solve for x
    x = 9,633,704,915.52/105,385.20
  6. Step 6: Final answer
    x = 91,414.21

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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.