Home / 126,948.20-190,422.30-74,330.60

Finding the Fourth Proportional to 126,948.20, 190,422.30 and 74,330.60

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Solution

The fourth proportional to 126,948.20, 190,422.30 and 74,330.60 is: 111,495.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,948.20 : 190,422.30 = 74,330.60 : x
  2. Step 2: Convert to fraction form
    126,948.20/190,422.30 = 74,330.60/x
  3. Step 3: Cross multiply
    126,948.20x = 190,422.30 × 74,330.60
  4. Step 4: Simplify right side
    126,948.20x = 14,154,203,812.38
  5. Step 5: Solve for x
    x = 14,154,203,812.38/126,948.20
  6. Step 6: Final answer
    x = 111,495.90

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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.