Home / 105,816.78-146,028.92-58,074.57

Finding the Fourth Proportional to 105,816.78, 146,028.92 and 58,074.57

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Solution

The fourth proportional to 105,816.78, 146,028.92 and 58,074.57 is: 80,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,816.78 : 146,028.92 = 58,074.57 : x
  2. Step 2: Convert to fraction form
    105,816.78/146,028.92 = 58,074.57/x
  3. Step 3: Cross multiply
    105,816.78x = 146,028.92 × 58,074.57
  4. Step 4: Simplify right side
    105,816.78x = 8,480,566,446.19
  5. Step 5: Solve for x
    x = 8,480,566,446.19/105,816.78
  6. Step 6: Final answer
    x = 80,143.87

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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.