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Finding the Fourth Proportional to 159,425.75, 220,017.52 and 87,805.75

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Solution

The fourth proportional to 159,425.75, 220,017.52 and 87,805.75 is: 121,177.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,425.75 : 220,017.52 = 87,805.75 : x
  2. Step 2: Convert to fraction form
    159,425.75/220,017.52 = 87,805.75/x
  3. Step 3: Cross multiply
    159,425.75x = 220,017.52 × 87,805.75
  4. Step 4: Simplify right side
    159,425.75x = 19,318,802,917.71
  5. Step 5: Solve for x
    x = 19,318,802,917.71/159,425.75
  6. Step 6: Final answer
    x = 121,177.44

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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.