Home / 121,256.10-181,992.15-71,273.70

Finding the Fourth Proportional to 121,256.10, 181,992.15 and 71,273.70

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Solution

The fourth proportional to 121,256.10, 181,992.15 and 71,273.70 is: 106,974.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,256.10 : 181,992.15 = 71,273.70 : x
  2. Step 2: Convert to fraction form
    121,256.10/181,992.15 = 71,273.70/x
  3. Step 3: Cross multiply
    121,256.10x = 181,992.15 × 71,273.70
  4. Step 4: Simplify right side
    121,256.10x = 12,971,253,901.46
  5. Step 5: Solve for x
    x = 12,971,253,901.46/121,256.10
  6. Step 6: Final answer
    x = 106,974.03

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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.