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Finding the Fourth Proportional to 159,628.74, 220,289.22 and 88,011.60

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Solution

The fourth proportional to 159,628.74, 220,289.22 and 88,011.60 is: 121,456.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,628.74 : 220,289.22 = 88,011.60 : x
  2. Step 2: Convert to fraction form
    159,628.74/220,289.22 = 88,011.60/x
  3. Step 3: Cross multiply
    159,628.74x = 220,289.22 × 88,011.60
  4. Step 4: Simplify right side
    159,628.74x = 19,388,006,714.95
  5. Step 5: Solve for x
    x = 19,388,006,714.95/159,628.74
  6. Step 6: Final answer
    x = 121,456.87

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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.