Home / 121,934.70-168,327.41-91,731.52

Finding the Fourth Proportional to 121,934.70, 168,327.41 and 91,731.52

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Solution

The fourth proportional to 121,934.70, 168,327.41 and 91,731.52 is: 126,632.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,934.70 : 168,327.41 = 91,731.52 : x
  2. Step 2: Convert to fraction form
    121,934.70/168,327.41 = 91,731.52/x
  3. Step 3: Cross multiply
    121,934.70x = 168,327.41 × 91,731.52
  4. Step 4: Simplify right side
    121,934.70x = 15,440,929,176.96
  5. Step 5: Solve for x
    x = 15,440,929,176.96/121,934.70
  6. Step 6: Final answer
    x = 126,632.77

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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.