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Finding the Fourth Proportional to 187,092.40, 280,552.20 and 81,857.20

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Solution

The fourth proportional to 187,092.40, 280,552.20 and 81,857.20 is: 122,748.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,092.40 : 280,552.20 = 81,857.20 : x
  2. Step 2: Convert to fraction form
    187,092.40/280,552.20 = 81,857.20/x
  3. Step 3: Cross multiply
    187,092.40x = 280,552.20 × 81,857.20
  4. Step 4: Simplify right side
    187,092.40x = 22,965,217,545.84
  5. Step 5: Solve for x
    x = 22,965,217,545.84/187,092.40
  6. Step 6: Final answer
    x = 122,748.00

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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.