Home / 121,146.82-181,721.22-42,260.92

Finding the Fourth Proportional to 121,146.82, 181,721.22 and 42,260.92

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Solution

The fourth proportional to 121,146.82, 181,721.22 and 42,260.92 is: 63,391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,146.82 : 181,721.22 = 42,260.92 : x
  2. Step 2: Convert to fraction form
    121,146.82/181,721.22 = 42,260.92/x
  3. Step 3: Cross multiply
    121,146.82x = 181,721.22 × 42,260.92
  4. Step 4: Simplify right side
    121,146.82x = 7,679,705,940.72
  5. Step 5: Solve for x
    x = 7,679,705,940.72/121,146.82
  6. Step 6: Final answer
    x = 63,391.73

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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.