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Finding the Fourth Proportional to 156,305.60, 215,701.44 and 84,687.44

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Solution

The fourth proportional to 156,305.60, 215,701.44 and 84,687.44 is: 116,868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,305.60 : 215,701.44 = 84,687.44 : x
  2. Step 2: Convert to fraction form
    156,305.60/215,701.44 = 84,687.44/x
  3. Step 3: Cross multiply
    156,305.60x = 215,701.44 × 84,687.44
  4. Step 4: Simplify right side
    156,305.60x = 18,267,202,757.91
  5. Step 5: Solve for x
    x = 18,267,202,757.91/156,305.60
  6. Step 6: Final answer
    x = 116,868.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.