Home / 100,675.14-138,924.54-55,351.95

Finding the Fourth Proportional to 100,675.14, 138,924.54 and 55,351.95

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Solution

The fourth proportional to 100,675.14, 138,924.54 and 55,351.95 is: 76,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,675.14 : 138,924.54 = 55,351.95 : x
  2. Step 2: Convert to fraction form
    100,675.14/138,924.54 = 55,351.95/x
  3. Step 3: Cross multiply
    100,675.14x = 138,924.54 × 55,351.95
  4. Step 4: Simplify right side
    100,675.14x = 7,689,744,191.85
  5. Step 5: Solve for x
    x = 7,689,744,191.85/100,675.14
  6. Step 6: Final answer
    x = 76,381.76

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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.