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Finding the Fourth Proportional to 121,155.39, 181,761.84 and 38,049.39

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Solution

The fourth proportional to 121,155.39, 181,761.84 and 38,049.39 is: 57,083.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,155.39 : 181,761.84 = 38,049.39 : x
  2. Step 2: Convert to fraction form
    121,155.39/181,761.84 = 38,049.39/x
  3. Step 3: Cross multiply
    121,155.39x = 181,761.84 × 38,049.39
  4. Step 4: Simplify right side
    121,155.39x = 6,915,927,137.28
  5. Step 5: Solve for x
    x = 6,915,927,137.28/121,155.39
  6. Step 6: Final answer
    x = 57,083.12

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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.