Home / 121,926.17-168,315.65-91,723.02

Finding the Fourth Proportional to 121,926.17, 168,315.65 and 91,723.02

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Solution

The fourth proportional to 121,926.17, 168,315.65 and 91,723.02 is: 126,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,926.17 : 168,315.65 = 91,723.02 : x
  2. Step 2: Convert to fraction form
    121,926.17/168,315.65 = 91,723.02/x
  3. Step 3: Cross multiply
    121,926.17x = 168,315.65 × 91,723.02
  4. Step 4: Simplify right side
    121,926.17x = 15,438,418,727.45
  5. Step 5: Solve for x
    x = 15,438,418,727.45/121,926.17
  6. Step 6: Final answer
    x = 126,621.04

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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.