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Finding the Fourth Proportional to 187,217.20, 280,825.80 and 54,101.80

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Solution

The fourth proportional to 187,217.20, 280,825.80 and 54,101.80 is: 81,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,217.20 : 280,825.80 = 54,101.80 : x
  2. Step 2: Convert to fraction form
    187,217.20/280,825.80 = 54,101.80/x
  3. Step 3: Cross multiply
    187,217.20x = 280,825.80 × 54,101.80
  4. Step 4: Simplify right side
    187,217.20x = 15,193,181,266.44
  5. Step 5: Solve for x
    x = 15,193,181,266.44/187,217.20
  6. Step 6: Final answer
    x = 81,152.70

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1.5x scale

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.