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Finding the Fourth Proportional to 121,081.20, 181,276.20 and 117,625.20

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Solution

The fourth proportional to 121,081.20, 181,276.20 and 117,625.20 is: 176,102.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,081.20 : 181,276.20 = 117,625.20 : x
  2. Step 2: Convert to fraction form
    121,081.20/181,276.20 = 117,625.20/x
  3. Step 3: Cross multiply
    121,081.20x = 181,276.20 × 117,625.20
  4. Step 4: Simplify right side
    121,081.20x = 21,322,649,280.24
  5. Step 5: Solve for x
    x = 21,322,649,280.24/121,081.20
  6. Step 6: Final answer
    x = 176,102.06

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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.