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Finding the Fourth Proportional to 111,806.20, 167,612.10 and 67,385.80

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Solution

The fourth proportional to 111,806.20, 167,612.10 and 67,385.80 is: 101,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.20 : 167,612.10 = 67,385.80 : x
  2. Step 2: Convert to fraction form
    111,806.20/167,612.10 = 67,385.80/x
  3. Step 3: Cross multiply
    111,806.20x = 167,612.10 × 67,385.80
  4. Step 4: Simplify right side
    111,806.20x = 11,294,675,448.18
  5. Step 5: Solve for x
    x = 11,294,675,448.18/111,806.20
  6. Step 6: Final answer
    x = 101,020.12

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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.