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Finding the Fourth Proportional to 122,642.01, 169,240.44 and 71,659.44

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Solution

The fourth proportional to 122,642.01, 169,240.44 and 71,659.44 is: 98,886.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,642.01 : 169,240.44 = 71,659.44 : x
  2. Step 2: Convert to fraction form
    122,642.01/169,240.44 = 71,659.44/x
  3. Step 3: Cross multiply
    122,642.01x = 169,240.44 × 71,659.44
  4. Step 4: Simplify right side
    122,642.01x = 12,127,675,155.75
  5. Step 5: Solve for x
    x = 12,127,675,155.75/122,642.01
  6. Step 6: Final answer
    x = 98,886.79

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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.