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Finding the Fourth Proportional to 121,639.92, 167,862.74 and 67,924.97

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Solution

The fourth proportional to 121,639.92, 167,862.74 and 67,924.97 is: 93,736.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,639.92 : 167,862.74 = 67,924.97 : x
  2. Step 2: Convert to fraction form
    121,639.92/167,862.74 = 67,924.97/x
  3. Step 3: Cross multiply
    121,639.92x = 167,862.74 × 67,924.97
  4. Step 4: Simplify right side
    121,639.92x = 11,402,071,578.62
  5. Step 5: Solve for x
    x = 11,402,071,578.62/121,639.92
  6. Step 6: Final answer
    x = 93,736.26

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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.