Home / 126,819.78-190,299.69-70,691.50

Finding the Fourth Proportional to 126,819.78, 190,299.69 and 70,691.50

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Solution

The fourth proportional to 126,819.78, 190,299.69 and 70,691.50 is: 106,076.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,819.78 : 190,299.69 = 70,691.50 : x
  2. Step 2: Convert to fraction form
    126,819.78/190,299.69 = 70,691.50/x
  3. Step 3: Cross multiply
    126,819.78x = 190,299.69 × 70,691.50
  4. Step 4: Simplify right side
    126,819.78x = 13,452,570,535.64
  5. Step 5: Solve for x
    x = 13,452,570,535.64/126,819.78
  6. Step 6: Final answer
    x = 106,076.28

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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.