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Finding the Fourth Proportional to 187,972.08, 281,952.72 and 69,640.80

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Solution

The fourth proportional to 187,972.08, 281,952.72 and 69,640.80 is: 104,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,972.08 : 281,952.72 = 69,640.80 : x
  2. Step 2: Convert to fraction form
    187,972.08/281,952.72 = 69,640.80/x
  3. Step 3: Cross multiply
    187,972.08x = 281,952.72 × 69,640.80
  4. Step 4: Simplify right side
    187,972.08x = 19,635,412,982.98
  5. Step 5: Solve for x
    x = 19,635,412,982.98/187,972.08
  6. Step 6: Final answer
    x = 104,459.20

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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.