Home / 126,963.20-190,315.20-74,345.60

Finding the Fourth Proportional to 126,963.20, 190,315.20 and 74,345.60

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Solution

The fourth proportional to 126,963.20, 190,315.20 and 74,345.60 is: 111,442.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,963.20 : 190,315.20 = 74,345.60 : x
  2. Step 2: Convert to fraction form
    126,963.20/190,315.20 = 74,345.60/x
  3. Step 3: Cross multiply
    126,963.20x = 190,315.20 × 74,345.60
  4. Step 4: Simplify right side
    126,963.20x = 14,149,097,733.12
  5. Step 5: Solve for x
    x = 14,149,097,733.12/126,963.20
  6. Step 6: Final answer
    x = 111,442.51

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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.