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Finding the Fourth Proportional to 112,671.35, 155,475.65 and 67,340.30

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Solution

The fourth proportional to 112,671.35, 155,475.65 and 67,340.30 is: 92,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,671.35 : 155,475.65 = 67,340.30 : x
  2. Step 2: Convert to fraction form
    112,671.35/155,475.65 = 67,340.30/x
  3. Step 3: Cross multiply
    112,671.35x = 155,475.65 × 67,340.30
  4. Step 4: Simplify right side
    112,671.35x = 10,469,775,799.62
  5. Step 5: Solve for x
    x = 10,469,775,799.62/112,671.35
  6. Step 6: Final answer
    x = 92,923.15

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1.5x scale

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.