Home / 231,821.40-347,732.10-74,065.80

Finding the Fourth Proportional to 231,821.40, 347,732.10 and 74,065.80

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Solution

The fourth proportional to 231,821.40, 347,732.10 and 74,065.80 is: 111,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,821.40 : 347,732.10 = 74,065.80 : x
  2. Step 2: Convert to fraction form
    231,821.40/347,732.10 = 74,065.80/x
  3. Step 3: Cross multiply
    231,821.40x = 347,732.10 × 74,065.80
  4. Step 4: Simplify right side
    231,821.40x = 25,755,056,172.18
  5. Step 5: Solve for x
    x = 25,755,056,172.18/231,821.40
  6. Step 6: Final answer
    x = 111,098.70

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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.