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Finding the Fourth Proportional to 121,663.31, 167,891.95 and 67,946.75

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Solution

The fourth proportional to 121,663.31, 167,891.95 and 67,946.75 is: 93,764.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,663.31 : 167,891.95 = 67,946.75 : x
  2. Step 2: Convert to fraction form
    121,663.31/167,891.95 = 67,946.75/x
  3. Step 3: Cross multiply
    121,663.31x = 167,891.95 × 67,946.75
  4. Step 4: Simplify right side
    121,663.31x = 11,407,712,353.66
  5. Step 5: Solve for x
    x = 11,407,712,353.66/121,663.31
  6. Step 6: Final answer
    x = 93,764.61

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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.