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Finding the Fourth Proportional to 121,099.73, 181,695.72 and 54,524.55

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Solution

The fourth proportional to 121,099.73, 181,695.72 and 54,524.55 is: 81,807.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,099.73 : 181,695.72 = 54,524.55 : x
  2. Step 2: Convert to fraction form
    121,099.73/181,695.72 = 54,524.55/x
  3. Step 3: Cross multiply
    121,099.73x = 181,695.72 × 54,524.55
  4. Step 4: Simplify right side
    121,099.73x = 9,906,877,369.93
  5. Step 5: Solve for x
    x = 9,906,877,369.93/121,099.73
  6. Step 6: Final answer
    x = 81,807.59

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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.