Home / 126,743.38-174,906.02-78,996.68

Finding the Fourth Proportional to 126,743.38, 174,906.02 and 78,996.68

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Solution

The fourth proportional to 126,743.38, 174,906.02 and 78,996.68 is: 109,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,743.38 : 174,906.02 = 78,996.68 : x
  2. Step 2: Convert to fraction form
    126,743.38/174,906.02 = 78,996.68/x
  3. Step 3: Cross multiply
    126,743.38x = 174,906.02 × 78,996.68
  4. Step 4: Simplify right side
    126,743.38x = 13,816,994,892.01
  5. Step 5: Solve for x
    x = 13,816,994,892.01/126,743.38
  6. Step 6: Final answer
    x = 109,015.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.