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Finding the Fourth Proportional to 121,753.80, 182,630.70 and 108,534.60

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Solution

The fourth proportional to 121,753.80, 182,630.70 and 108,534.60 is: 162,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,753.80 : 182,630.70 = 108,534.60 : x
  2. Step 2: Convert to fraction form
    121,753.80/182,630.70 = 108,534.60/x
  3. Step 3: Cross multiply
    121,753.80x = 182,630.70 × 108,534.60
  4. Step 4: Simplify right side
    121,753.80x = 19,821,749,972.22
  5. Step 5: Solve for x
    x = 19,821,749,972.22/121,753.80
  6. Step 6: Final answer
    x = 162,801.90

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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.