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Finding the Fourth Proportional to 159,956.07, 220,738.64 and 88,335.78

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Solution

The fourth proportional to 159,956.07, 220,738.64 and 88,335.78 is: 121,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,956.07 : 220,738.64 = 88,335.78 : x
  2. Step 2: Convert to fraction form
    159,956.07/220,738.64 = 88,335.78/x
  3. Step 3: Cross multiply
    159,956.07x = 220,738.64 × 88,335.78
  4. Step 4: Simplify right side
    159,956.07x = 19,499,119,498.86
  5. Step 5: Solve for x
    x = 19,499,119,498.86/159,956.07
  6. Step 6: Final answer
    x = 121,902.97

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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.