Home / 100,162.27-138,223.94-54,843.17

Finding the Fourth Proportional to 100,162.27, 138,223.94 and 54,843.17

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Solution

The fourth proportional to 100,162.27, 138,223.94 and 54,843.17 is: 75,683.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,162.27 : 138,223.94 = 54,843.17 : x
  2. Step 2: Convert to fraction form
    100,162.27/138,223.94 = 54,843.17/x
  3. Step 3: Cross multiply
    100,162.27x = 138,223.94 × 54,843.17
  4. Step 4: Simplify right side
    100,162.27x = 7,580,639,039.49
  5. Step 5: Solve for x
    x = 7,580,639,039.49/100,162.27
  6. Step 6: Final answer
    x = 75,683.58

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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.