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Finding the Fourth Proportional to 159,905.86, 220,670.42 and 88,286.02

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Solution

The fourth proportional to 159,905.86, 220,670.42 and 88,286.02 is: 121,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,905.86 : 220,670.42 = 88,286.02 : x
  2. Step 2: Convert to fraction form
    159,905.86/220,670.42 = 88,286.02/x
  3. Step 3: Cross multiply
    159,905.86x = 220,670.42 × 88,286.02
  4. Step 4: Simplify right side
    159,905.86x = 19,482,113,113.53
  5. Step 5: Solve for x
    x = 19,482,113,113.53/159,905.86
  6. Step 6: Final answer
    x = 121,834.89

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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.