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Finding the Fourth Proportional to 159,658.05, 220,329.65 and 88,040.61

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Solution

The fourth proportional to 159,658.05, 220,329.65 and 88,040.61 is: 121,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,658.05 : 220,329.65 = 88,040.61 : x
  2. Step 2: Convert to fraction form
    159,658.05/220,329.65 = 88,040.61/x
  3. Step 3: Cross multiply
    159,658.05x = 220,329.65 × 88,040.61
  4. Step 4: Simplify right side
    159,658.05x = 19,397,956,787.09
  5. Step 5: Solve for x
    x = 19,397,956,787.09/159,658.05
  6. Step 6: Final answer
    x = 121,496.89

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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.