Home / 138,219.07-207,328.68-38,379.26

Finding the Fourth Proportional to 138,219.07, 207,328.68 and 38,379.26

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Solution

The fourth proportional to 138,219.07, 207,328.68 and 38,379.26 is: 57,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219.07 : 207,328.68 = 38,379.26 : x
  2. Step 2: Convert to fraction form
    138,219.07/207,328.68 = 38,379.26/x
  3. Step 3: Cross multiply
    138,219.07x = 207,328.68 × 38,379.26
  4. Step 4: Simplify right side
    138,219.07x = 7,957,121,250.39
  5. Step 5: Solve for x
    x = 7,957,121,250.39/138,219.07
  6. Step 6: Final answer
    x = 57,568.91

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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.