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Finding the Fourth Proportional to 187,315.80, 281,010.15 and 54,200.40

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Solution

The fourth proportional to 187,315.80, 281,010.15 and 54,200.40 is: 81,311.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,315.80 : 281,010.15 = 54,200.40 : x
  2. Step 2: Convert to fraction form
    187,315.80/281,010.15 = 54,200.40/x
  3. Step 3: Cross multiply
    187,315.80x = 281,010.15 × 54,200.40
  4. Step 4: Simplify right side
    187,315.80x = 15,230,862,534.06
  5. Step 5: Solve for x
    x = 15,230,862,534.06/187,315.80
  6. Step 6: Final answer
    x = 81,311.15

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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.