Home / 138,040.40-207,065.20-38,192.24

Finding the Fourth Proportional to 138,040.40, 207,065.20 and 38,192.24

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Solution

The fourth proportional to 138,040.40, 207,065.20 and 38,192.24 is: 57,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,040.40 : 207,065.20 = 38,192.24 : x
  2. Step 2: Convert to fraction form
    138,040.40/207,065.20 = 38,192.24/x
  3. Step 3: Cross multiply
    138,040.40x = 207,065.20 × 38,192.24
  4. Step 4: Simplify right side
    138,040.40x = 7,908,283,814.05
  5. Step 5: Solve for x
    x = 7,908,283,814.05/138,040.40
  6. Step 6: Final answer
    x = 57,289.63

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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.