Home / 100,325.13-138,450.24-55,007.25

Finding the Fourth Proportional to 100,325.13, 138,450.24 and 55,007.25

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Solution

The fourth proportional to 100,325.13, 138,450.24 and 55,007.25 is: 75,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,325.13 : 138,450.24 = 55,007.25 : x
  2. Step 2: Convert to fraction form
    100,325.13/138,450.24 = 55,007.25/x
  3. Step 3: Cross multiply
    100,325.13x = 138,450.24 × 55,007.25
  4. Step 4: Simplify right side
    100,325.13x = 7,615,766,964.24
  5. Step 5: Solve for x
    x = 7,615,766,964.24/100,325.13
  6. Step 6: Final answer
    x = 75,910.86

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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.