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Finding the Fourth Proportional to 121,657.91, 167,886.25 and 67,943.87

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Solution

The fourth proportional to 121,657.91, 167,886.25 and 67,943.87 is: 93,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,657.91 : 167,886.25 = 67,943.87 : x
  2. Step 2: Convert to fraction form
    121,657.91/167,886.25 = 67,943.87/x
  3. Step 3: Cross multiply
    121,657.91x = 167,886.25 × 67,943.87
  4. Step 4: Simplify right side
    121,657.91x = 11,406,841,544.79
  5. Step 5: Solve for x
    x = 11,406,841,544.79/121,657.91
  6. Step 6: Final answer
    x = 93,761.61

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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.