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Finding the Fourth Proportional to 159,898.45, 220,660.19 and 88,278.61

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Solution

The fourth proportional to 159,898.45, 220,660.19 and 88,278.61 is: 121,824.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,898.45 : 220,660.19 = 88,278.61 : x
  2. Step 2: Convert to fraction form
    159,898.45/220,660.19 = 88,278.61/x
  3. Step 3: Cross multiply
    159,898.45x = 220,660.19 × 88,278.61
  4. Step 4: Simplify right side
    159,898.45x = 19,479,574,634.84
  5. Step 5: Solve for x
    x = 19,479,574,634.84/159,898.45
  6. Step 6: Final answer
    x = 121,824.66

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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.