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Finding the Fourth Proportional to 191,487.44, 287,031.50 and 107,123.92

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Solution

The fourth proportional to 191,487.44, 287,031.50 and 107,123.92 is: 160,574.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,487.44 : 287,031.50 = 107,123.92 : x
  2. Step 2: Convert to fraction form
    191,487.44/287,031.50 = 107,123.92/x
  3. Step 3: Cross multiply
    191,487.44x = 287,031.50 × 107,123.92
  4. Step 4: Simplify right side
    191,487.44x = 30,747,937,472.70
  5. Step 5: Solve for x
    x = 30,747,937,472.70/191,487.44
  6. Step 6: Final answer
    x = 160,574.17

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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.