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Finding the Fourth Proportional to 159,550.56, 220,174.56 and 87,929.28

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Solution

The fourth proportional to 159,550.56, 220,174.56 and 87,929.28 is: 121,339.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,550.56 : 220,174.56 = 87,929.28 : x
  2. Step 2: Convert to fraction form
    159,550.56/220,174.56 = 87,929.28/x
  3. Step 3: Cross multiply
    159,550.56x = 220,174.56 × 87,929.28
  4. Step 4: Simplify right side
    159,550.56x = 19,359,790,535.12
  5. Step 5: Solve for x
    x = 19,359,790,535.12/159,550.56
  6. Step 6: Final answer
    x = 121,339.53

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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.