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Finding the Fourth Proportional to 159,871.20, 220,619.20 and 88,253.44

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Solution

The fourth proportional to 159,871.20, 220,619.20 and 88,253.44 is: 121,788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,871.20 : 220,619.20 = 88,253.44 : x
  2. Step 2: Convert to fraction form
    159,871.20/220,619.20 = 88,253.44/x
  3. Step 3: Cross multiply
    159,871.20x = 220,619.20 × 88,253.44
  4. Step 4: Simplify right side
    159,871.20x = 19,470,403,330.05
  5. Step 5: Solve for x
    x = 19,470,403,330.05/159,871.20
  6. Step 6: Final answer
    x = 121,788.06

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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.