Home / 138,040.50-207,065.36-38,192.34

Finding the Fourth Proportional to 138,040.50, 207,065.36 and 38,192.34

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Solution

The fourth proportional to 138,040.50, 207,065.36 and 38,192.34 is: 57,289.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,040.50 : 207,065.36 = 38,192.34 : x
  2. Step 2: Convert to fraction form
    138,040.50/207,065.36 = 38,192.34/x
  3. Step 3: Cross multiply
    138,040.50x = 207,065.36 × 38,192.34
  4. Step 4: Simplify right side
    138,040.50x = 7,908,310,440.38
  5. Step 5: Solve for x
    x = 7,908,310,440.38/138,040.50
  6. Step 6: Final answer
    x = 57,289.78

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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.