Home / 100,233.41-138,321.70-54,911.34

Finding the Fourth Proportional to 100,233.41, 138,321.70 and 54,911.34

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Solution

The fourth proportional to 100,233.41, 138,321.70 and 54,911.34 is: 75,777.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,233.41 : 138,321.70 = 54,911.34 : x
  2. Step 2: Convert to fraction form
    100,233.41/138,321.70 = 54,911.34/x
  3. Step 3: Cross multiply
    100,233.41x = 138,321.70 × 54,911.34
  4. Step 4: Simplify right side
    100,233.41x = 7,595,429,760.80
  5. Step 5: Solve for x
    x = 7,595,429,760.80/100,233.41
  6. Step 6: Final answer
    x = 75,777.43

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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.