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Finding the Fourth Proportional to 121,158.40, 181,766.34 and 38,052.40

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Solution

The fourth proportional to 121,158.40, 181,766.34 and 38,052.40 is: 57,087.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,158.40 : 181,766.34 = 38,052.40 : x
  2. Step 2: Convert to fraction form
    121,158.40/181,766.34 = 38,052.40/x
  3. Step 3: Cross multiply
    121,158.40x = 181,766.34 × 38,052.40
  4. Step 4: Simplify right side
    121,158.40x = 6,916,645,476.22
  5. Step 5: Solve for x
    x = 6,916,645,476.22/121,158.40
  6. Step 6: Final answer
    x = 57,087.63

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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.