Home / 121,291.70-181,937.55-108,461.30

Finding the Fourth Proportional to 121,291.70, 181,937.55 and 108,461.30

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Solution

The fourth proportional to 121,291.70, 181,937.55 and 108,461.30 is: 162,691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,291.70 : 181,937.55 = 108,461.30 : x
  2. Step 2: Convert to fraction form
    121,291.70/181,937.55 = 108,461.30/x
  3. Step 3: Cross multiply
    121,291.70x = 181,937.55 × 108,461.30
  4. Step 4: Simplify right side
    121,291.70x = 19,733,183,191.82
  5. Step 5: Solve for x
    x = 19,733,183,191.82/121,291.70
  6. Step 6: Final answer
    x = 162,691.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.