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Finding the Fourth Proportional to 126,287.52, 174,119.16 and 80,890.84

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Solution

The fourth proportional to 126,287.52, 174,119.16 and 80,890.84 is: 111,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,287.52 : 174,119.16 = 80,890.84 : x
  2. Step 2: Convert to fraction form
    126,287.52/174,119.16 = 80,890.84/x
  3. Step 3: Cross multiply
    126,287.52x = 174,119.16 × 80,890.84
  4. Step 4: Simplify right side
    126,287.52x = 14,084,645,112.49
  5. Step 5: Solve for x
    x = 14,084,645,112.49/126,287.52
  6. Step 6: Final answer
    x = 111,528.40

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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.