Home / 121,225.20-181,405.80-76,873.20

Finding the Fourth Proportional to 121,225.20, 181,405.80 and 76,873.20

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Solution

The fourth proportional to 121,225.20, 181,405.80 and 76,873.20 is: 115,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,225.20 : 181,405.80 = 76,873.20 : x
  2. Step 2: Convert to fraction form
    121,225.20/181,405.80 = 76,873.20/x
  3. Step 3: Cross multiply
    121,225.20x = 181,405.80 × 76,873.20
  4. Step 4: Simplify right side
    121,225.20x = 13,945,244,344.56
  5. Step 5: Solve for x
    x = 13,945,244,344.56/121,225.20
  6. Step 6: Final answer
    x = 115,035.85

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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.