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Finding the Fourth Proportional to 121,096.98, 181,691.60 and 54,521.80

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Solution

The fourth proportional to 121,096.98, 181,691.60 and 54,521.80 is: 81,803.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,096.98 : 181,691.60 = 54,521.80 : x
  2. Step 2: Convert to fraction form
    121,096.98/181,691.60 = 54,521.80/x
  3. Step 3: Cross multiply
    121,096.98x = 181,691.60 × 54,521.80
  4. Step 4: Simplify right side
    121,096.98x = 9,906,152,350.04
  5. Step 5: Solve for x
    x = 9,906,152,350.04/121,096.98
  6. Step 6: Final answer
    x = 81,803.46

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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.