Home / 231,729.40-347,594.10-82,138.60

Finding the Fourth Proportional to 231,729.40, 347,594.10 and 82,138.60

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Solution

The fourth proportional to 231,729.40, 347,594.10 and 82,138.60 is: 123,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,729.40 : 347,594.10 = 82,138.60 : x
  2. Step 2: Convert to fraction form
    231,729.40/347,594.10 = 82,138.60/x
  3. Step 3: Cross multiply
    231,729.40x = 347,594.10 × 82,138.60
  4. Step 4: Simplify right side
    231,729.40x = 28,550,892,742.26
  5. Step 5: Solve for x
    x = 28,550,892,742.26/231,729.40
  6. Step 6: Final answer
    x = 123,207.90

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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.