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Finding the Fourth Proportional to 121,384.56, 167,508.77 and 67,672.86

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Solution

The fourth proportional to 121,384.56, 167,508.77 and 67,672.86 is: 93,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,384.56 : 167,508.77 = 67,672.86 : x
  2. Step 2: Convert to fraction form
    121,384.56/167,508.77 = 67,672.86/x
  3. Step 3: Cross multiply
    121,384.56x = 167,508.77 × 67,672.86
  4. Step 4: Simplify right side
    121,384.56x = 11,335,797,540.98
  5. Step 5: Solve for x
    x = 11,335,797,540.98/121,384.56
  6. Step 6: Final answer
    x = 93,387.47

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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.