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Finding the Fourth Proportional to 142,755.66, 214,266.33 and 72,687.42

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Solution

The fourth proportional to 142,755.66, 214,266.33 and 72,687.42 is: 109,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,755.66 : 214,266.33 = 72,687.42 : x
  2. Step 2: Convert to fraction form
    142,755.66/214,266.33 = 72,687.42/x
  3. Step 3: Cross multiply
    142,755.66x = 214,266.33 × 72,687.42
  4. Step 4: Simplify right side
    142,755.66x = 15,574,466,720.57
  5. Step 5: Solve for x
    x = 15,574,466,720.57/142,755.66
  6. Step 6: Final answer
    x = 109,098.77

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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.