Home / 138,193.84-207,268.60-49,430.80

Finding the Fourth Proportional to 138,193.84, 207,268.60 and 49,430.80

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Solution

The fourth proportional to 138,193.84, 207,268.60 and 49,430.80 is: 74,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,193.84 : 207,268.60 = 49,430.80 : x
  2. Step 2: Convert to fraction form
    138,193.84/207,268.60 = 49,430.80/x
  3. Step 3: Cross multiply
    138,193.84x = 207,268.60 × 49,430.80
  4. Step 4: Simplify right side
    138,193.84x = 10,245,452,712.88
  5. Step 5: Solve for x
    x = 10,245,452,712.88/138,193.84
  6. Step 6: Final answer
    x = 74,138.27

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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.