Home / 189,792.02-261,939.04-109,217.90

Finding the Fourth Proportional to 189,792.02, 261,939.04 and 109,217.90

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Solution

The fourth proportional to 189,792.02, 261,939.04 and 109,217.90 is: 150,735.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,792.02 : 261,939.04 = 109,217.90 : x
  2. Step 2: Convert to fraction form
    189,792.02/261,939.04 = 109,217.90/x
  3. Step 3: Cross multiply
    189,792.02x = 261,939.04 × 109,217.90
  4. Step 4: Simplify right side
    189,792.02x = 28,608,431,876.82
  5. Step 5: Solve for x
    x = 28,608,431,876.82/189,792.02
  6. Step 6: Final answer
    x = 150,735.69

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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.