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Finding the Fourth Proportional to 159,871.92, 220,624.80 and 88,250.40

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Solution

The fourth proportional to 159,871.92, 220,624.80 and 88,250.40 is: 121,786.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,871.92 : 220,624.80 = 88,250.40 : x
  2. Step 2: Convert to fraction form
    159,871.92/220,624.80 = 88,250.40/x
  3. Step 3: Cross multiply
    159,871.92x = 220,624.80 × 88,250.40
  4. Step 4: Simplify right side
    159,871.92x = 19,470,226,849.92
  5. Step 5: Solve for x
    x = 19,470,226,849.92/159,871.92
  6. Step 6: Final answer
    x = 121,786.41

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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.