Home / 192,391.23-288,431.19-80,155.81

Finding the Fourth Proportional to 192,391.23, 288,431.19 and 80,155.81

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Solution

The fourth proportional to 192,391.23, 288,431.19 and 80,155.81 is: 120,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,391.23 : 288,431.19 = 80,155.81 : x
  2. Step 2: Convert to fraction form
    192,391.23/288,431.19 = 80,155.81/x
  3. Step 3: Cross multiply
    192,391.23x = 288,431.19 × 80,155.81
  4. Step 4: Simplify right side
    192,391.23x = 23,119,435,663.71
  5. Step 5: Solve for x
    x = 23,119,435,663.71/192,391.23
  6. Step 6: Final answer
    x = 120,168.86

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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.