Home / 138,554.20-207,831.30-49,810.60

Finding the Fourth Proportional to 138,554.20, 207,831.30 and 49,810.60

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Solution

The fourth proportional to 138,554.20, 207,831.30 and 49,810.60 is: 74,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,554.20 : 207,831.30 = 49,810.60 : x
  2. Step 2: Convert to fraction form
    138,554.20/207,831.30 = 49,810.60/x
  3. Step 3: Cross multiply
    138,554.20x = 207,831.30 × 49,810.60
  4. Step 4: Simplify right side
    138,554.20x = 10,352,201,751.78
  5. Step 5: Solve for x
    x = 10,352,201,751.78/138,554.20
  6. Step 6: Final answer
    x = 74,715.90

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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.