Home / 99,831.24-137,799-57,418.20

Finding the Fourth Proportional to 99,831.24, 137,799 and 57,418.20

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Solution

The fourth proportional to 99,831.24, 137,799 and 57,418.20 is: 79,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,831.24 : 137,799 = 57,418.20 : x
  2. Step 2: Convert to fraction form
    99,831.24/137,799 = 57,418.20/x
  3. Step 3: Cross multiply
    99,831.24x = 137,799 × 57,418.20
  4. Step 4: Simplify right side
    99,831.24x = 7,912,170,541.80
  5. Step 5: Solve for x
    x = 7,912,170,541.80/99,831.24
  6. Step 6: Final answer
    x = 79,255.46

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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.