Home / 142,428.20-213,383.10-115,989.80

Finding the Fourth Proportional to 142,428.20, 213,383.10 and 115,989.80

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Solution

The fourth proportional to 142,428.20, 213,383.10 and 115,989.80 is: 173,773.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,428.20 : 213,383.10 = 115,989.80 : x
  2. Step 2: Convert to fraction form
    142,428.20/213,383.10 = 115,989.80/x
  3. Step 3: Cross multiply
    142,428.20x = 213,383.10 × 115,989.80
  4. Step 4: Simplify right side
    142,428.20x = 24,750,263,092.38
  5. Step 5: Solve for x
    x = 24,750,263,092.38/142,428.20
  6. Step 6: Final answer
    x = 173,773.61

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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.