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Finding the Fourth Proportional to 189,902.97, 284,994.41 and 90,063.45

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Solution

The fourth proportional to 189,902.97, 284,994.41 and 90,063.45 is: 135,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,902.97 : 284,994.41 = 90,063.45 : x
  2. Step 2: Convert to fraction form
    189,902.97/284,994.41 = 90,063.45/x
  3. Step 3: Cross multiply
    189,902.97x = 284,994.41 × 90,063.45
  4. Step 4: Simplify right side
    189,902.97x = 25,667,579,345.00
  5. Step 5: Solve for x
    x = 25,667,579,345.00/189,902.97
  6. Step 6: Final answer
    x = 135,161.55

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1.5x scale

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.