Home / 100,532.04-138,736.52-57,515.56

Finding the Fourth Proportional to 100,532.04, 138,736.52 and 57,515.56

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Solution

The fourth proportional to 100,532.04, 138,736.52 and 57,515.56 is: 79,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,532.04 : 138,736.52 = 57,515.56 : x
  2. Step 2: Convert to fraction form
    100,532.04/138,736.52 = 57,515.56/x
  3. Step 3: Cross multiply
    100,532.04x = 138,736.52 × 57,515.56
  4. Step 4: Simplify right side
    100,532.04x = 7,979,508,640.25
  5. Step 5: Solve for x
    x = 7,979,508,640.25/100,532.04
  6. Step 6: Final answer
    x = 79,372.79

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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.