Home / 126,932.40-190,168.20-103,431.60

Finding the Fourth Proportional to 126,932.40, 190,168.20 and 103,431.60

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Solution

The fourth proportional to 126,932.40, 190,168.20 and 103,431.60 is: 154,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,932.40 : 190,168.20 = 103,431.60 : x
  2. Step 2: Convert to fraction form
    126,932.40/190,168.20 = 103,431.60/x
  3. Step 3: Cross multiply
    126,932.40x = 190,168.20 × 103,431.60
  4. Step 4: Simplify right side
    126,932.40x = 19,669,401,195.12
  5. Step 5: Solve for x
    x = 19,669,401,195.12/126,932.40
  6. Step 6: Final answer
    x = 154,959.66

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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.