Home / 156,464.22-215,781.27-122,871.90

Finding the Fourth Proportional to 156,464.22, 215,781.27 and 122,871.90

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Solution

The fourth proportional to 156,464.22, 215,781.27 and 122,871.90 is: 169,453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,464.22 : 215,781.27 = 122,871.90 : x
  2. Step 2: Convert to fraction form
    156,464.22/215,781.27 = 122,871.90/x
  3. Step 3: Cross multiply
    156,464.22x = 215,781.27 × 122,871.90
  4. Step 4: Simplify right side
    156,464.22x = 26,513,454,629.31
  5. Step 5: Solve for x
    x = 26,513,454,629.31/156,464.22
  6. Step 6: Final answer
    x = 169,453.79

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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.