Home / 121,034.20-181,119.30-76,682.20

Finding the Fourth Proportional to 121,034.20, 181,119.30 and 76,682.20

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Solution

The fourth proportional to 121,034.20, 181,119.30 and 76,682.20 is: 114,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,034.20 : 181,119.30 = 76,682.20 : x
  2. Step 2: Convert to fraction form
    121,034.20/181,119.30 = 76,682.20/x
  3. Step 3: Cross multiply
    121,034.20x = 181,119.30 × 76,682.20
  4. Step 4: Simplify right side
    121,034.20x = 13,888,626,386.46
  5. Step 5: Solve for x
    x = 13,888,626,386.46/121,034.20
  6. Step 6: Final answer
    x = 114,749.60

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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.