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Finding the Fourth Proportional to 159,730.65, 220,499.15 and 103,169.61

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Solution

The fourth proportional to 159,730.65, 220,499.15 and 103,169.61 is: 142,419.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,730.65 : 220,499.15 = 103,169.61 : x
  2. Step 2: Convert to fraction form
    159,730.65/220,499.15 = 103,169.61/x
  3. Step 3: Cross multiply
    159,730.65x = 220,499.15 × 103,169.61
  4. Step 4: Simplify right side
    159,730.65x = 22,748,810,794.98
  5. Step 5: Solve for x
    x = 22,748,810,794.98/159,730.65
  6. Step 6: Final answer
    x = 142,419.82

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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.