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Finding the Fourth Proportional to 100,766.40, 151,149.60 and 67,588.80

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Solution

The fourth proportional to 100,766.40, 151,149.60 and 67,588.80 is: 101,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,766.40 : 151,149.60 = 67,588.80 : x
  2. Step 2: Convert to fraction form
    100,766.40/151,149.60 = 67,588.80/x
  3. Step 3: Cross multiply
    100,766.40x = 151,149.60 × 67,588.80
  4. Step 4: Simplify right side
    100,766.40x = 10,216,020,084.48
  5. Step 5: Solve for x
    x = 10,216,020,084.48/100,766.40
  6. Step 6: Final answer
    x = 101,383.20

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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.