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Finding the Fourth Proportional to 162,512.70, 243,671.85 and 83,780.70

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Solution

The fourth proportional to 162,512.70, 243,671.85 and 83,780.70 is: 125,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,512.70 : 243,671.85 = 83,780.70 : x
  2. Step 2: Convert to fraction form
    162,512.70/243,671.85 = 83,780.70/x
  3. Step 3: Cross multiply
    162,512.70x = 243,671.85 × 83,780.70
  4. Step 4: Simplify right side
    162,512.70x = 20,414,998,163.30
  5. Step 5: Solve for x
    x = 20,414,998,163.30/162,512.70
  6. Step 6: Final answer
    x = 125,620.94

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1.5x scale

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.