Home / 121,013.75-181,530.21-36,781.22

Finding the Fourth Proportional to 121,013.75, 181,530.21 and 36,781.22

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Solution

The fourth proportional to 121,013.75, 181,530.21 and 36,781.22 is: 55,174.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,013.75 : 181,530.21 = 36,781.22 : x
  2. Step 2: Convert to fraction form
    121,013.75/181,530.21 = 36,781.22/x
  3. Step 3: Cross multiply
    121,013.75x = 181,530.21 × 36,781.22
  4. Step 4: Simplify right side
    121,013.75x = 6,676,902,590.66
  5. Step 5: Solve for x
    x = 6,676,902,590.66/121,013.75
  6. Step 6: Final answer
    x = 55,174.74

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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.