Home / 138,002.20-207,003.30-103,010.20

Finding the Fourth Proportional to 138,002.20, 207,003.30 and 103,010.20

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Solution

The fourth proportional to 138,002.20, 207,003.30 and 103,010.20 is: 154,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,002.20 : 207,003.30 = 103,010.20 : x
  2. Step 2: Convert to fraction form
    138,002.20/207,003.30 = 103,010.20/x
  3. Step 3: Cross multiply
    138,002.20x = 207,003.30 × 103,010.20
  4. Step 4: Simplify right side
    138,002.20x = 21,323,451,333.66
  5. Step 5: Solve for x
    x = 21,323,451,333.66/138,002.20
  6. Step 6: Final answer
    x = 154,515.30

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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.