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Finding the Fourth Proportional to 159,937.86, 220,712.85 and 88,318.47

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Solution

The fourth proportional to 159,937.86, 220,712.85 and 88,318.47 is: 121,878.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,937.86 : 220,712.85 = 88,318.47 : x
  2. Step 2: Convert to fraction form
    159,937.86/220,712.85 = 88,318.47/x
  3. Step 3: Cross multiply
    159,937.86x = 220,712.85 × 88,318.47
  4. Step 4: Simplify right side
    159,937.86x = 19,493,021,221.34
  5. Step 5: Solve for x
    x = 19,493,021,221.34/159,937.86
  6. Step 6: Final answer
    x = 121,878.72

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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.