Home / 189,933.40-284,816.94-90,122.02

Finding the Fourth Proportional to 189,933.40, 284,816.94 and 90,122.02

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Solution

The fourth proportional to 189,933.40, 284,816.94 and 90,122.02 is: 135,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,933.40 : 284,816.94 = 90,122.02 : x
  2. Step 2: Convert to fraction form
    189,933.40/284,816.94 = 90,122.02/x
  3. Step 3: Cross multiply
    189,933.40x = 284,816.94 × 90,122.02
  4. Step 4: Simplify right side
    189,933.40x = 25,668,277,963.02
  5. Step 5: Solve for x
    x = 25,668,277,963.02/189,933.40
  6. Step 6: Final answer
    x = 135,143.57

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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.