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Finding the Fourth Proportional to 112,175.28, 154,750.20 and 71,869.68

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Solution

The fourth proportional to 112,175.28, 154,750.20 and 71,869.68 is: 99,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,175.28 : 154,750.20 = 71,869.68 : x
  2. Step 2: Convert to fraction form
    112,175.28/154,750.20 = 71,869.68/x
  3. Step 3: Cross multiply
    112,175.28x = 154,750.20 × 71,869.68
  4. Step 4: Simplify right side
    112,175.28x = 11,121,847,353.94
  5. Step 5: Solve for x
    x = 11,121,847,353.94/112,175.28
  6. Step 6: Final answer
    x = 99,147.04

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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.