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Finding the Fourth Proportional to 162,761.80, 244,142.70 and 103,639.90

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Solution

The fourth proportional to 162,761.80, 244,142.70 and 103,639.90 is: 155,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,761.80 : 244,142.70 = 103,639.90 : x
  2. Step 2: Convert to fraction form
    162,761.80/244,142.70 = 103,639.90/x
  3. Step 3: Cross multiply
    162,761.80x = 244,142.70 × 103,639.90
  4. Step 4: Simplify right side
    162,761.80x = 25,302,925,013.73
  5. Step 5: Solve for x
    x = 25,302,925,013.73/162,761.80
  6. Step 6: Final answer
    x = 155,459.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.