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Finding the Fourth Proportional to 126,687.47, 174,828.69 and 69,326.80

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Solution

The fourth proportional to 126,687.47, 174,828.69 and 69,326.80 is: 95,670.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,687.47 : 174,828.69 = 69,326.80 : x
  2. Step 2: Convert to fraction form
    126,687.47/174,828.69 = 69,326.80/x
  3. Step 3: Cross multiply
    126,687.47x = 174,828.69 × 69,326.80
  4. Step 4: Simplify right side
    126,687.47x = 12,120,313,188.82
  5. Step 5: Solve for x
    x = 12,120,313,188.82/126,687.47
  6. Step 6: Final answer
    x = 95,670.97

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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.