Home / 121,841.73-168,145.25-67,394.61

Finding the Fourth Proportional to 121,841.73, 168,145.25 and 67,394.61

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Solution

The fourth proportional to 121,841.73, 168,145.25 and 67,394.61 is: 93,006.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,841.73 : 168,145.25 = 67,394.61 : x
  2. Step 2: Convert to fraction form
    121,841.73/168,145.25 = 67,394.61/x
  3. Step 3: Cross multiply
    121,841.73x = 168,145.25 × 67,394.61
  4. Step 4: Simplify right side
    121,841.73x = 11,332,083,210.13
  5. Step 5: Solve for x
    x = 11,332,083,210.13/121,841.73
  6. Step 6: Final answer
    x = 93,006.58

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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.