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Finding the Fourth Proportional to 159,956.40, 220,728.70 and 88,335.78

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Solution

The fourth proportional to 159,956.40, 220,728.70 and 88,335.78 is: 121,897.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,956.40 : 220,728.70 = 88,335.78 : x
  2. Step 2: Convert to fraction form
    159,956.40/220,728.70 = 88,335.78/x
  3. Step 3: Cross multiply
    159,956.40x = 220,728.70 × 88,335.78
  4. Step 4: Simplify right side
    159,956.40x = 19,498,241,882.89
  5. Step 5: Solve for x
    x = 19,498,241,882.89/159,956.40
  6. Step 6: Final answer
    x = 121,897.23

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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.