Home / 189,932.40-284,815.44-90,121.02

Finding the Fourth Proportional to 189,932.40, 284,815.44 and 90,121.02

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Solution

The fourth proportional to 189,932.40, 284,815.44 and 90,121.02 is: 135,142.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,932.40 : 284,815.44 = 90,121.02 : x
  2. Step 2: Convert to fraction form
    189,932.40/284,815.44 = 90,121.02/x
  3. Step 3: Cross multiply
    189,932.40x = 284,815.44 × 90,121.02
  4. Step 4: Simplify right side
    189,932.40x = 25,667,857,964.55
  5. Step 5: Solve for x
    x = 25,667,857,964.55/189,932.40
  6. Step 6: Final answer
    x = 135,142.07

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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.