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Finding the Fourth Proportional to 133,013.76, 199,443.84 and 90,944.79

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Solution

The fourth proportional to 133,013.76, 199,443.84 and 90,944.79 is: 136,364.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,013.76 : 199,443.84 = 90,944.79 : x
  2. Step 2: Convert to fraction form
    133,013.76/199,443.84 = 90,944.79/x
  3. Step 3: Cross multiply
    133,013.76x = 199,443.84 × 90,944.79
  4. Step 4: Simplify right side
    133,013.76x = 18,138,377,056.64
  5. Step 5: Solve for x
    x = 18,138,377,056.64/133,013.76
  6. Step 6: Final answer
    x = 136,364.67

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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.