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Finding the Fourth Proportional to 191,600.85, 287,179.52 and 90,463.04

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Solution

The fourth proportional to 191,600.85, 287,179.52 and 90,463.04 is: 135,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,600.85 : 287,179.52 = 90,463.04 : x
  2. Step 2: Convert to fraction form
    191,600.85/287,179.52 = 90,463.04/x
  3. Step 3: Cross multiply
    191,600.85x = 287,179.52 × 90,463.04
  4. Step 4: Simplify right side
    191,600.85x = 25,979,130,516.73
  5. Step 5: Solve for x
    x = 25,979,130,516.73/191,600.85
  6. Step 6: Final answer
    x = 135,589.85

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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.