Home / 218,680.03-301,781.48-121,881.21

Finding the Fourth Proportional to 218,680.03, 301,781.48 and 121,881.21

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Solution

The fourth proportional to 218,680.03, 301,781.48 and 121,881.21 is: 168,197.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,680.03 : 301,781.48 = 121,881.21 : x
  2. Step 2: Convert to fraction form
    218,680.03/301,781.48 = 121,881.21/x
  3. Step 3: Cross multiply
    218,680.03x = 301,781.48 × 121,881.21
  4. Step 4: Simplify right side
    218,680.03x = 36,781,491,731.25
  5. Step 5: Solve for x
    x = 36,781,491,731.25/218,680.03
  6. Step 6: Final answer
    x = 168,197.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.