Home / 137,474.16-189,705.36-80,874.60

Finding the Fourth Proportional to 137,474.16, 189,705.36 and 80,874.60

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Solution

The fourth proportional to 137,474.16, 189,705.36 and 80,874.60 is: 111,601.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,474.16 : 189,705.36 = 80,874.60 : x
  2. Step 2: Convert to fraction form
    137,474.16/189,705.36 = 80,874.60/x
  3. Step 3: Cross multiply
    137,474.16x = 189,705.36 × 80,874.60
  4. Step 4: Simplify right side
    137,474.16x = 15,342,345,107.86
  5. Step 5: Solve for x
    x = 15,342,345,107.86/137,474.16
  6. Step 6: Final answer
    x = 111,601.66

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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.