Home / 138,151.44-190,634.58-77,716.94

Finding the Fourth Proportional to 138,151.44, 190,634.58 and 77,716.94

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Solution

The fourth proportional to 138,151.44, 190,634.58 and 77,716.94 is: 107,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,151.44 : 190,634.58 = 77,716.94 : x
  2. Step 2: Convert to fraction form
    138,151.44/190,634.58 = 77,716.94/x
  3. Step 3: Cross multiply
    138,151.44x = 190,634.58 × 77,716.94
  4. Step 4: Simplify right side
    138,151.44x = 14,815,535,262.61
  5. Step 5: Solve for x
    x = 14,815,535,262.61/138,151.44
  6. Step 6: Final answer
    x = 107,241.27

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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.