Home / 203,231.40-304,847.10-128,107.95

Finding the Fourth Proportional to 203,231.40, 304,847.10 and 128,107.95

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Solution

The fourth proportional to 203,231.40, 304,847.10 and 128,107.95 is: 192,161.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,231.40 : 304,847.10 = 128,107.95 : x
  2. Step 2: Convert to fraction form
    203,231.40/304,847.10 = 128,107.95/x
  3. Step 3: Cross multiply
    203,231.40x = 304,847.10 × 128,107.95
  4. Step 4: Simplify right side
    203,231.40x = 39,053,337,044.45
  5. Step 5: Solve for x
    x = 39,053,337,044.45/203,231.40
  6. Step 6: Final answer
    x = 192,161.93

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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.