Home / 138,040.56-207,065.48-38,192.40

Finding the Fourth Proportional to 138,040.56, 207,065.48 and 38,192.40

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Solution

The fourth proportional to 138,040.56, 207,065.48 and 38,192.40 is: 57,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,040.56 : 207,065.48 = 38,192.40 : x
  2. Step 2: Convert to fraction form
    138,040.56/207,065.48 = 38,192.40/x
  3. Step 3: Cross multiply
    138,040.56x = 207,065.48 × 38,192.40
  4. Step 4: Simplify right side
    138,040.56x = 7,908,327,447.39
  5. Step 5: Solve for x
    x = 7,908,327,447.39/138,040.56
  6. Step 6: Final answer
    x = 57,289.88

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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.