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Finding the Fourth Proportional to 159,496.28, 220,105.08 and 86,898.80

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Solution

The fourth proportional to 159,496.28, 220,105.08 and 86,898.80 is: 119,920.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,496.28 : 220,105.08 = 86,898.80 : x
  2. Step 2: Convert to fraction form
    159,496.28/220,105.08 = 86,898.80/x
  3. Step 3: Cross multiply
    159,496.28x = 220,105.08 × 86,898.80
  4. Step 4: Simplify right side
    159,496.28x = 19,126,867,325.90
  5. Step 5: Solve for x
    x = 19,126,867,325.90/159,496.28
  6. Step 6: Final answer
    x = 119,920.46

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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.