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Finding the Fourth Proportional to 100,532.96, 138,658.60 and 68,292.44

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Solution

The fourth proportional to 100,532.96, 138,658.60 and 68,292.44 is: 94,191.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,532.96 : 138,658.60 = 68,292.44 : x
  2. Step 2: Convert to fraction form
    100,532.96/138,658.60 = 68,292.44/x
  3. Step 3: Cross multiply
    100,532.96x = 138,658.60 × 68,292.44
  4. Step 4: Simplify right side
    100,532.96x = 9,469,334,120.98
  5. Step 5: Solve for x
    x = 9,469,334,120.98/100,532.96
  6. Step 6: Final answer
    x = 94,191.34

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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.