Home / 138,302.20-207,453.30-131,390.20

Finding the Fourth Proportional to 138,302.20, 207,453.30 and 131,390.20

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Solution

The fourth proportional to 138,302.20, 207,453.30 and 131,390.20 is: 197,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,302.20 : 207,453.30 = 131,390.20 : x
  2. Step 2: Convert to fraction form
    138,302.20/207,453.30 = 131,390.20/x
  3. Step 3: Cross multiply
    138,302.20x = 207,453.30 × 131,390.20
  4. Step 4: Simplify right side
    138,302.20x = 27,257,330,577.66
  5. Step 5: Solve for x
    x = 27,257,330,577.66/138,302.20
  6. Step 6: Final answer
    x = 197,085.30

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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.