Home / 135,834.72-203,464.80-85,889.04

Finding the Fourth Proportional to 135,834.72, 203,464.80 and 85,889.04

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Solution

The fourth proportional to 135,834.72, 203,464.80 and 85,889.04 is: 128,651.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,834.72 : 203,464.80 = 85,889.04 : x
  2. Step 2: Convert to fraction form
    135,834.72/203,464.80 = 85,889.04/x
  3. Step 3: Cross multiply
    135,834.72x = 203,464.80 × 85,889.04
  4. Step 4: Simplify right side
    135,834.72x = 17,475,396,345.79
  5. Step 5: Solve for x
    x = 17,475,396,345.79/135,834.72
  6. Step 6: Final answer
    x = 128,651.91

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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.