Home / 126,930.20-190,265.70-74,312.60

Finding the Fourth Proportional to 126,930.20, 190,265.70 and 74,312.60

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Solution

The fourth proportional to 126,930.20, 190,265.70 and 74,312.60 is: 111,393.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,930.20 : 190,265.70 = 74,312.60 : x
  2. Step 2: Convert to fraction form
    126,930.20/190,265.70 = 74,312.60/x
  3. Step 3: Cross multiply
    126,930.20x = 190,265.70 × 74,312.60
  4. Step 4: Simplify right side
    126,930.20x = 14,139,138,857.82
  5. Step 5: Solve for x
    x = 14,139,138,857.82/126,930.20
  6. Step 6: Final answer
    x = 111,393.02

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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.