Home / 75,121.20-103,556.76-57,184.98

Finding the Fourth Proportional to 75,121.20, 103,556.76 and 57,184.98

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Solution

The fourth proportional to 75,121.20, 103,556.76 and 57,184.98 is: 78,831.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.20 : 103,556.76 = 57,184.98 : x
  2. Step 2: Convert to fraction form
    75,121.20/103,556.76 = 57,184.98/x
  3. Step 3: Cross multiply
    75,121.20x = 103,556.76 × 57,184.98
  4. Step 4: Simplify right side
    75,121.20x = 5,921,891,249.46
  5. Step 5: Solve for x
    x = 5,921,891,249.46/75,121.20
  6. Step 6: Final answer
    x = 78,831.16

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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.