Home / 138,808.42-191,556.97-75,147.57

Finding the Fourth Proportional to 138,808.42, 191,556.97 and 75,147.57

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Solution

The fourth proportional to 138,808.42, 191,556.97 and 75,147.57 is: 103,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,808.42 : 191,556.97 = 75,147.57 : x
  2. Step 2: Convert to fraction form
    138,808.42/191,556.97 = 75,147.57/x
  3. Step 3: Cross multiply
    138,808.42x = 191,556.97 × 75,147.57
  4. Step 4: Simplify right side
    138,808.42x = 14,395,040,624.19
  5. Step 5: Solve for x
    x = 14,395,040,624.19/138,808.42
  6. Step 6: Final answer
    x = 103,704.38

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1.5x scale

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.