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Finding the Fourth Proportional to 126,696.44, 174,844.28 and 76,398.68

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Solution

The fourth proportional to 126,696.44, 174,844.28 and 76,398.68 is: 105,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,696.44 : 174,844.28 = 76,398.68 : x
  2. Step 2: Convert to fraction form
    126,696.44/174,844.28 = 76,398.68/x
  3. Step 3: Cross multiply
    126,696.44x = 174,844.28 × 76,398.68
  4. Step 4: Simplify right side
    126,696.44x = 13,357,872,197.55
  5. Step 5: Solve for x
    x = 13,357,872,197.55/126,696.44
  6. Step 6: Final answer
    x = 105,432.10

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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.