Home / 128,589.10-192,896.40-53,732.64

Finding the Fourth Proportional to 128,589.10, 192,896.40 and 53,732.64

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Solution

The fourth proportional to 128,589.10, 192,896.40 and 53,732.64 is: 80,604.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,589.10 : 192,896.40 = 53,732.64 : x
  2. Step 2: Convert to fraction form
    128,589.10/192,896.40 = 53,732.64/x
  3. Step 3: Cross multiply
    128,589.10x = 192,896.40 × 53,732.64
  4. Step 4: Simplify right side
    128,589.10x = 10,364,832,818.50
  5. Step 5: Solve for x
    x = 10,364,832,818.50/128,589.10
  6. Step 6: Final answer
    x = 80,604.29

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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.