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Finding the Fourth Proportional to 159,169.67, 219,657.65 and 87,553.32

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Solution

The fourth proportional to 159,169.67, 219,657.65 and 87,553.32 is: 120,825.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,169.67 : 219,657.65 = 87,553.32 : x
  2. Step 2: Convert to fraction form
    159,169.67/219,657.65 = 87,553.32/x
  3. Step 3: Cross multiply
    159,169.67x = 219,657.65 × 87,553.32
  4. Step 4: Simplify right side
    159,169.67x = 19,231,756,520.90
  5. Step 5: Solve for x
    x = 19,231,756,520.90/159,169.67
  6. Step 6: Final answer
    x = 120,825.51

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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.