Home / 156,251.10-215,620.29-91,711.56

Finding the Fourth Proportional to 156,251.10, 215,620.29 and 91,711.56

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Solution

The fourth proportional to 156,251.10, 215,620.29 and 91,711.56 is: 126,558.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,251.10 : 215,620.29 = 91,711.56 : x
  2. Step 2: Convert to fraction form
    156,251.10/215,620.29 = 91,711.56/x
  3. Step 3: Cross multiply
    156,251.10x = 215,620.29 × 91,711.56
  4. Step 4: Simplify right side
    156,251.10x = 19,774,873,163.55
  5. Step 5: Solve for x
    x = 19,774,873,163.55/156,251.10
  6. Step 6: Final answer
    x = 126,558.30

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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.