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Finding the Fourth Proportional to 112,230.40, 168,353.70 and 67,761.40

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Solution

The fourth proportional to 112,230.40, 168,353.70 and 67,761.40 is: 101,646.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,230.40 : 168,353.70 = 67,761.40 : x
  2. Step 2: Convert to fraction form
    112,230.40/168,353.70 = 67,761.40/x
  3. Step 3: Cross multiply
    112,230.40x = 168,353.70 × 67,761.40
  4. Step 4: Simplify right side
    112,230.40x = 11,407,882,407.18
  5. Step 5: Solve for x
    x = 11,407,882,407.18/112,230.40
  6. Step 6: Final answer
    x = 101,646.99

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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.