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Finding the Fourth Proportional to 159,805.85, 220,532.72 and 88,187.94

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Solution

The fourth proportional to 159,805.85, 220,532.72 and 88,187.94 is: 121,699.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,805.85 : 220,532.72 = 88,187.94 : x
  2. Step 2: Convert to fraction form
    159,805.85/220,532.72 = 88,187.94/x
  3. Step 3: Cross multiply
    159,805.85x = 220,532.72 × 88,187.94
  4. Step 4: Simplify right side
    159,805.85x = 19,448,326,279.40
  5. Step 5: Solve for x
    x = 19,448,326,279.40/159,805.85
  6. Step 6: Final answer
    x = 121,699.71

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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.