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Finding the Fourth Proportional to 179,487.81, 247,694.16 and 103,000.82

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Solution

The fourth proportional to 179,487.81, 247,694.16 and 103,000.82 is: 142,141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,487.81 : 247,694.16 = 103,000.82 : x
  2. Step 2: Convert to fraction form
    179,487.81/247,694.16 = 103,000.82/x
  3. Step 3: Cross multiply
    179,487.81x = 247,694.16 × 103,000.82
  4. Step 4: Simplify right side
    179,487.81x = 25,512,700,350.74
  5. Step 5: Solve for x
    x = 25,512,700,350.74/179,487.81
  6. Step 6: Final answer
    x = 142,141.69

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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.