Home / 138,556.20-207,834.30-49,812.60

Finding the Fourth Proportional to 138,556.20, 207,834.30 and 49,812.60

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Solution

The fourth proportional to 138,556.20, 207,834.30 and 49,812.60 is: 74,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,556.20 : 207,834.30 = 49,812.60 : x
  2. Step 2: Convert to fraction form
    138,556.20/207,834.30 = 49,812.60/x
  3. Step 3: Cross multiply
    138,556.20x = 207,834.30 × 49,812.60
  4. Step 4: Simplify right side
    138,556.20x = 10,352,766,852.18
  5. Step 5: Solve for x
    x = 10,352,766,852.18/138,556.20
  6. Step 6: Final answer
    x = 74,718.90

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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.