Home / 99,493.03-137,278.15-83,425.33

Finding the Fourth Proportional to 99,493.03, 137,278.15 and 83,425.33

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Solution

The fourth proportional to 99,493.03, 137,278.15 and 83,425.33 is: 115,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,493.03 : 137,278.15 = 83,425.33 : x
  2. Step 2: Convert to fraction form
    99,493.03/137,278.15 = 83,425.33/x
  3. Step 3: Cross multiply
    99,493.03x = 137,278.15 × 83,425.33
  4. Step 4: Simplify right side
    99,493.03x = 11,452,474,965.54
  5. Step 5: Solve for x
    x = 11,452,474,965.54/99,493.03
  6. Step 6: Final answer
    x = 115,108.31

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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.