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Finding the Fourth Proportional to 121,597.52, 167,774.96 and 71,286.80

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Solution

The fourth proportional to 121,597.52, 167,774.96 and 71,286.80 is: 98,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,597.52 : 167,774.96 = 71,286.80 : x
  2. Step 2: Convert to fraction form
    121,597.52/167,774.96 = 71,286.80/x
  3. Step 3: Cross multiply
    121,597.52x = 167,774.96 × 71,286.80
  4. Step 4: Simplify right side
    121,597.52x = 11,960,140,018.53
  5. Step 5: Solve for x
    x = 11,960,140,018.53/121,597.52
  6. Step 6: Final answer
    x = 98,358.42

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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.