Home / 138,148.20-207,222.30-49,404.60

Finding the Fourth Proportional to 138,148.20, 207,222.30 and 49,404.60

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Solution

The fourth proportional to 138,148.20, 207,222.30 and 49,404.60 is: 74,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,148.20 : 207,222.30 = 49,404.60 : x
  2. Step 2: Convert to fraction form
    138,148.20/207,222.30 = 49,404.60/x
  3. Step 3: Cross multiply
    138,148.20x = 207,222.30 × 49,404.60
  4. Step 4: Simplify right side
    138,148.20x = 10,237,734,842.58
  5. Step 5: Solve for x
    x = 10,237,734,842.58/138,148.20
  6. Step 6: Final answer
    x = 74,106.90

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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.