Home / 121,929.20-168,319.82-91,726.02

Finding the Fourth Proportional to 121,929.20, 168,319.82 and 91,726.02

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Solution

The fourth proportional to 121,929.20, 168,319.82 and 91,726.02 is: 126,625.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,929.20 : 168,319.82 = 91,726.02 : x
  2. Step 2: Convert to fraction form
    121,929.20/168,319.82 = 91,726.02/x
  3. Step 3: Cross multiply
    121,929.20x = 168,319.82 × 91,726.02
  4. Step 4: Simplify right side
    121,929.20x = 15,439,306,717.09
  5. Step 5: Solve for x
    x = 15,439,306,717.09/121,929.20
  6. Step 6: Final answer
    x = 126,625.18

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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.