Home / 140,428.57-193,790.19-76,766.17

Finding the Fourth Proportional to 140,428.57, 193,790.19 and 76,766.17

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Solution

The fourth proportional to 140,428.57, 193,790.19 and 76,766.17 is: 105,936.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,428.57 : 193,790.19 = 76,766.17 : x
  2. Step 2: Convert to fraction form
    140,428.57/193,790.19 = 76,766.17/x
  3. Step 3: Cross multiply
    140,428.57x = 193,790.19 × 76,766.17
  4. Step 4: Simplify right side
    140,428.57x = 14,876,530,669.87
  5. Step 5: Solve for x
    x = 14,876,530,669.87/140,428.57
  6. Step 6: Final answer
    x = 105,936.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.