Home / 138,410.20-207,269.70-91,408.60

Finding the Fourth Proportional to 138,410.20, 207,269.70 and 91,408.60

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Solution

The fourth proportional to 138,410.20, 207,269.70 and 91,408.60 is: 136,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,410.20 : 207,269.70 = 91,408.60 : x
  2. Step 2: Convert to fraction form
    138,410.20/207,269.70 = 91,408.60/x
  3. Step 3: Cross multiply
    138,410.20x = 207,269.70 × 91,408.60
  4. Step 4: Simplify right side
    138,410.20x = 18,946,233,099.42
  5. Step 5: Solve for x
    x = 18,946,233,099.42/138,410.20
  6. Step 6: Final answer
    x = 136,884.66

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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.