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Finding the Fourth Proportional to 187,240.80, 280,861.20 and 54,125.40

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Solution

The fourth proportional to 187,240.80, 280,861.20 and 54,125.40 is: 81,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,240.80 : 280,861.20 = 54,125.40 : x
  2. Step 2: Convert to fraction form
    187,240.80/280,861.20 = 54,125.40/x
  3. Step 3: Cross multiply
    187,240.80x = 280,861.20 × 54,125.40
  4. Step 4: Simplify right side
    187,240.80x = 15,201,724,794.48
  5. Step 5: Solve for x
    x = 15,201,724,794.48/187,240.80
  6. Step 6: Final answer
    x = 81,188.10

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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.