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Finding the Fourth Proportional to 159,723.72, 220,410.79 and 88,101.90

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Solution

The fourth proportional to 159,723.72, 220,410.79 and 88,101.90 is: 121,576.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,723.72 : 220,410.79 = 88,101.90 : x
  2. Step 2: Convert to fraction form
    159,723.72/220,410.79 = 88,101.90/x
  3. Step 3: Cross multiply
    159,723.72x = 220,410.79 × 88,101.90
  4. Step 4: Simplify right side
    159,723.72x = 19,418,609,159.25
  5. Step 5: Solve for x
    x = 19,418,609,159.25/159,723.72
  6. Step 6: Final answer
    x = 121,576.24

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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.