Home / 126,753.12-190,036.26-76,821.48

Finding the Fourth Proportional to 126,753.12, 190,036.26 and 76,821.48

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Solution

The fourth proportional to 126,753.12, 190,036.26 and 76,821.48 is: 115,175.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,753.12 : 190,036.26 = 76,821.48 : x
  2. Step 2: Convert to fraction form
    126,753.12/190,036.26 = 76,821.48/x
  3. Step 3: Cross multiply
    126,753.12x = 190,036.26 × 76,821.48
  4. Step 4: Simplify right side
    126,753.12x = 14,598,866,746.86
  5. Step 5: Solve for x
    x = 14,598,866,746.86/126,753.12
  6. Step 6: Final answer
    x = 115,175.60

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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.