Home / 100,134.36-138,185.46-57,692.52

Finding the Fourth Proportional to 100,134.36, 138,185.46 and 57,692.52

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Solution

The fourth proportional to 100,134.36, 138,185.46 and 57,692.52 is: 79,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,134.36 : 138,185.46 = 57,692.52 : x
  2. Step 2: Convert to fraction form
    100,134.36/138,185.46 = 57,692.52/x
  3. Step 3: Cross multiply
    100,134.36x = 138,185.46 × 57,692.52
  4. Step 4: Simplify right side
    100,134.36x = 7,972,267,414.76
  5. Step 5: Solve for x
    x = 7,972,267,414.76/100,134.36
  6. Step 6: Final answer
    x = 79,615.70

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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.