Home / 100,517.36-138,725.01-57,500.82

Finding the Fourth Proportional to 100,517.36, 138,725.01 and 57,500.82

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Solution

The fourth proportional to 100,517.36, 138,725.01 and 57,500.82 is: 79,357.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,517.36 : 138,725.01 = 57,500.82 : x
  2. Step 2: Convert to fraction form
    100,517.36/138,725.01 = 57,500.82/x
  3. Step 3: Cross multiply
    100,517.36x = 138,725.01 × 57,500.82
  4. Step 4: Simplify right side
    100,517.36x = 7,976,801,829.51
  5. Step 5: Solve for x
    x = 7,976,801,829.51/100,517.36
  6. Step 6: Final answer
    x = 79,357.46

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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.