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Finding the Fourth Proportional to 159,679.48, 220,350.27 and 91,648.57

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Solution

The fourth proportional to 159,679.48, 220,350.27 and 91,648.57 is: 126,470.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,679.48 : 220,350.27 = 91,648.57 : x
  2. Step 2: Convert to fraction form
    159,679.48/220,350.27 = 91,648.57/x
  3. Step 3: Cross multiply
    159,679.48x = 220,350.27 × 91,648.57
  4. Step 4: Simplify right side
    159,679.48x = 20,194,786,686.37
  5. Step 5: Solve for x
    x = 20,194,786,686.37/159,679.48
  6. Step 6: Final answer
    x = 126,470.77

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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.