Home / 135,796.28-187,400.10-82,117.17

Finding the Fourth Proportional to 135,796.28, 187,400.10 and 82,117.17

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Solution

The fourth proportional to 135,796.28, 187,400.10 and 82,117.17 is: 113,322.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,796.28 : 187,400.10 = 82,117.17 : x
  2. Step 2: Convert to fraction form
    135,796.28/187,400.10 = 82,117.17/x
  3. Step 3: Cross multiply
    135,796.28x = 187,400.10 × 82,117.17
  4. Step 4: Simplify right side
    135,796.28x = 15,388,765,869.72
  5. Step 5: Solve for x
    x = 15,388,765,869.72/135,796.28
  6. Step 6: Final answer
    x = 113,322.44

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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.