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Finding the Fourth Proportional to 187,251.20, 280,876.80 and 127,116.80

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Solution

The fourth proportional to 187,251.20, 280,876.80 and 127,116.80 is: 190,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,251.20 : 280,876.80 = 127,116.80 : x
  2. Step 2: Convert to fraction form
    187,251.20/280,876.80 = 127,116.80/x
  3. Step 3: Cross multiply
    187,251.20x = 280,876.80 × 127,116.80
  4. Step 4: Simplify right side
    187,251.20x = 35,704,160,010.24
  5. Step 5: Solve for x
    x = 35,704,160,010.24/187,251.20
  6. Step 6: Final answer
    x = 190,675.20

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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.