Home / 138,716.64-191,377.76-91,034.78

Finding the Fourth Proportional to 138,716.64, 191,377.76 and 91,034.78

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Solution

The fourth proportional to 138,716.64, 191,377.76 and 91,034.78 is: 125,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,716.64 : 191,377.76 = 91,034.78 : x
  2. Step 2: Convert to fraction form
    138,716.64/191,377.76 = 91,034.78/x
  3. Step 3: Cross multiply
    138,716.64x = 191,377.76 × 91,034.78
  4. Step 4: Simplify right side
    138,716.64x = 17,422,030,866.43
  5. Step 5: Solve for x
    x = 17,422,030,866.43/138,716.64
  6. Step 6: Final answer
    x = 125,594.38

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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.