Home / 138,401.30-207,570.09-54,163.46

Finding the Fourth Proportional to 138,401.30, 207,570.09 and 54,163.46

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Solution

The fourth proportional to 138,401.30, 207,570.09 and 54,163.46 is: 81,232.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,401.30 : 207,570.09 = 54,163.46 : x
  2. Step 2: Convert to fraction form
    138,401.30/207,570.09 = 54,163.46/x
  3. Step 3: Cross multiply
    138,401.30x = 207,570.09 × 54,163.46
  4. Step 4: Simplify right side
    138,401.30x = 11,242,714,266.91
  5. Step 5: Solve for x
    x = 11,242,714,266.91/138,401.30
  6. Step 6: Final answer
    x = 81,232.72

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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.