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Finding the Fourth Proportional to 104,379.38, 156,753.21 and 77,732.61

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Solution

The fourth proportional to 104,379.38, 156,753.21 and 77,732.61 is: 116,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,379.38 : 156,753.21 = 77,732.61 : x
  2. Step 2: Convert to fraction form
    104,379.38/156,753.21 = 77,732.61/x
  3. Step 3: Cross multiply
    104,379.38x = 156,753.21 × 77,732.61
  4. Step 4: Simplify right side
    104,379.38x = 12,184,836,139.18
  5. Step 5: Solve for x
    x = 12,184,836,139.18/104,379.38
  6. Step 6: Final answer
    x = 116,736.05

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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.