Home / 121,823.28-168,131.56-68,111.47

Finding the Fourth Proportional to 121,823.28, 168,131.56 and 68,111.47

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Solution

The fourth proportional to 121,823.28, 168,131.56 and 68,111.47 is: 94,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,823.28 : 168,131.56 = 68,111.47 : x
  2. Step 2: Convert to fraction form
    121,823.28/168,131.56 = 68,111.47/x
  3. Step 3: Cross multiply
    121,823.28x = 168,131.56 × 68,111.47
  4. Step 4: Simplify right side
    121,823.28x = 11,451,687,704.99
  5. Step 5: Solve for x
    x = 11,451,687,704.99/121,823.28
  6. Step 6: Final answer
    x = 94,002.46

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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.