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Finding the Fourth Proportional to 121,597.64, 167,789.70 and 67,885.64

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Solution

The fourth proportional to 121,597.64, 167,789.70 and 67,885.64 is: 93,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,597.64 : 167,789.70 = 67,885.64 : x
  2. Step 2: Convert to fraction form
    121,597.64/167,789.70 = 67,885.64/x
  3. Step 3: Cross multiply
    121,597.64x = 167,789.70 × 67,885.64
  4. Step 4: Simplify right side
    121,597.64x = 11,390,511,169.91
  5. Step 5: Solve for x
    x = 11,390,511,169.91/121,597.64
  6. Step 6: Final answer
    x = 93,673.78

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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.