Home / 218,204.78-301,096.15-121,385.75

Finding the Fourth Proportional to 218,204.78, 301,096.15 and 121,385.75

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Solution

The fourth proportional to 218,204.78, 301,096.15 and 121,385.75 is: 167,497.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,204.78 : 301,096.15 = 121,385.75 : x
  2. Step 2: Convert to fraction form
    218,204.78/301,096.15 = 121,385.75/x
  3. Step 3: Cross multiply
    218,204.78x = 301,096.15 × 121,385.75
  4. Step 4: Simplify right side
    218,204.78x = 36,548,781,989.86
  5. Step 5: Solve for x
    x = 36,548,781,989.86/218,204.78
  6. Step 6: Final answer
    x = 167,497.62

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1.5x scale

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.