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Finding the Fourth Proportional to 136,122.92, 187,849.80 and 75,692.90

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Solution

The fourth proportional to 136,122.92, 187,849.80 and 75,692.90 is: 104,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,122.92 : 187,849.80 = 75,692.90 : x
  2. Step 2: Convert to fraction form
    136,122.92/187,849.80 = 75,692.90/x
  3. Step 3: Cross multiply
    136,122.92x = 187,849.80 × 75,692.90
  4. Step 4: Simplify right side
    136,122.92x = 14,218,896,126.42
  5. Step 5: Solve for x
    x = 14,218,896,126.42/136,122.92
  6. Step 6: Final answer
    x = 104,456.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.