Home / 128,677.20-193,034.43-39,937.88

Finding the Fourth Proportional to 128,677.20, 193,034.43 and 39,937.88

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Solution

The fourth proportional to 128,677.20, 193,034.43 and 39,937.88 is: 59,912.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,677.20 : 193,034.43 = 39,937.88 : x
  2. Step 2: Convert to fraction form
    128,677.20/193,034.43 = 39,937.88/x
  3. Step 3: Cross multiply
    128,677.20x = 193,034.43 × 39,937.88
  4. Step 4: Simplify right side
    128,677.20x = 7,709,384,936.04
  5. Step 5: Solve for x
    x = 7,709,384,936.04/128,677.20
  6. Step 6: Final answer
    x = 59,912.59

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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.