Home / 231,086.20-346,629.30-81,325.30

Finding the Fourth Proportional to 231,086.20, 346,629.30 and 81,325.30

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Solution

The fourth proportional to 231,086.20, 346,629.30 and 81,325.30 is: 121,987.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,086.20 : 346,629.30 = 81,325.30 : x
  2. Step 2: Convert to fraction form
    231,086.20/346,629.30 = 81,325.30/x
  3. Step 3: Cross multiply
    231,086.20x = 346,629.30 × 81,325.30
  4. Step 4: Simplify right side
    231,086.20x = 28,189,731,811.29
  5. Step 5: Solve for x
    x = 28,189,731,811.29/231,086.20
  6. Step 6: Final answer
    x = 121,987.95

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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.