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Finding the Fourth Proportional to 191,502.30, 287,253.45 and 125,147.10

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Solution

The fourth proportional to 191,502.30, 287,253.45 and 125,147.10 is: 187,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,502.30 : 287,253.45 = 125,147.10 : x
  2. Step 2: Convert to fraction form
    191,502.30/287,253.45 = 125,147.10/x
  3. Step 3: Cross multiply
    191,502.30x = 287,253.45 × 125,147.10
  4. Step 4: Simplify right side
    191,502.30x = 35,948,936,232.50
  5. Step 5: Solve for x
    x = 35,948,936,232.50/191,502.30
  6. Step 6: Final answer
    x = 187,720.65

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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.