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Finding the Fourth Proportional to 121,394.68, 167,630.45 and 76,150.44

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Solution

The fourth proportional to 121,394.68, 167,630.45 and 76,150.44 is: 105,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,394.68 : 167,630.45 = 76,150.44 : x
  2. Step 2: Convert to fraction form
    121,394.68/167,630.45 = 76,150.44/x
  3. Step 3: Cross multiply
    121,394.68x = 167,630.45 × 76,150.44
  4. Step 4: Simplify right side
    121,394.68x = 12,765,132,144.15
  5. Step 5: Solve for x
    x = 12,765,132,144.15/121,394.68
  6. Step 6: Final answer
    x = 105,153.97

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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.