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Finding the Fourth Proportional to 159,779.92, 220,495.80 and 88,159.30

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Solution

The fourth proportional to 159,779.92, 220,495.80 and 88,159.30 is: 121,659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,779.92 : 220,495.80 = 88,159.30 : x
  2. Step 2: Convert to fraction form
    159,779.92/220,495.80 = 88,159.30/x
  3. Step 3: Cross multiply
    159,779.92x = 220,495.80 × 88,159.30
  4. Step 4: Simplify right side
    159,779.92x = 19,438,755,380.94
  5. Step 5: Solve for x
    x = 19,438,755,380.94/159,779.92
  6. Step 6: Final answer
    x = 121,659.56

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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.