Home / 121,327.20-181,796.40-76,874.40

Finding the Fourth Proportional to 121,327.20, 181,796.40 and 76,874.40

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Solution

The fourth proportional to 121,327.20, 181,796.40 and 76,874.40 is: 115,188.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,327.20 : 181,796.40 = 76,874.40 : x
  2. Step 2: Convert to fraction form
    121,327.20/181,796.40 = 76,874.40/x
  3. Step 3: Cross multiply
    121,327.20x = 181,796.40 × 76,874.40
  4. Step 4: Simplify right side
    121,327.20x = 13,975,489,172.16
  5. Step 5: Solve for x
    x = 13,975,489,172.16/121,327.20
  6. Step 6: Final answer
    x = 115,188.43

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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.