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Finding the Fourth Proportional to 106,385.85, 159,443.10 and 56,489.85

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Solution

The fourth proportional to 106,385.85, 159,443.10 and 56,489.85 is: 84,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,385.85 : 159,443.10 = 56,489.85 : x
  2. Step 2: Convert to fraction form
    106,385.85/159,443.10 = 56,489.85/x
  3. Step 3: Cross multiply
    106,385.85x = 159,443.10 × 56,489.85
  4. Step 4: Simplify right side
    106,385.85x = 9,006,916,802.54
  5. Step 5: Solve for x
    x = 9,006,916,802.54/106,385.85
  6. Step 6: Final answer
    x = 84,662.73

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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.