Home / 100,007.11-149,999.10-25,121.56

Finding the Fourth Proportional to 100,007.11, 149,999.10 and 25,121.56

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Solution

The fourth proportional to 100,007.11, 149,999.10 and 25,121.56 is: 37,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,007.11 : 149,999.10 = 25,121.56 : x
  2. Step 2: Convert to fraction form
    100,007.11/149,999.10 = 25,121.56/x
  3. Step 3: Cross multiply
    100,007.11x = 149,999.10 × 25,121.56
  4. Step 4: Simplify right side
    100,007.11x = 3,768,210,746.47
  5. Step 5: Solve for x
    x = 3,768,210,746.47/100,007.11
  6. Step 6: Final answer
    x = 37,679.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.