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Finding the Fourth Proportional to 159,651.76, 220,351.36 and 91,715.33

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Solution

The fourth proportional to 159,651.76, 220,351.36 and 91,715.33 is: 126,585.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,651.76 : 220,351.36 = 91,715.33 : x
  2. Step 2: Convert to fraction form
    159,651.76/220,351.36 = 91,715.33/x
  3. Step 3: Cross multiply
    159,651.76x = 220,351.36 × 91,715.33
  4. Step 4: Simplify right side
    159,651.76x = 20,209,597,698.35
  5. Step 5: Solve for x
    x = 20,209,597,698.35/159,651.76
  6. Step 6: Final answer
    x = 126,585.50

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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.