Home / 140,072.87-193,300.31-76,410.65

Finding the Fourth Proportional to 140,072.87, 193,300.31 and 76,410.65

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Solution

The fourth proportional to 140,072.87, 193,300.31 and 76,410.65 is: 105,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,072.87 : 193,300.31 = 76,410.65 : x
  2. Step 2: Convert to fraction form
    140,072.87/193,300.31 = 76,410.65/x
  3. Step 3: Cross multiply
    140,072.87x = 193,300.31 × 76,410.65
  4. Step 4: Simplify right side
    140,072.87x = 14,770,200,983.75
  5. Step 5: Solve for x
    x = 14,770,200,983.75/140,072.87
  6. Step 6: Final answer
    x = 105,446.55

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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.