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Finding the Fourth Proportional to 110,891.70, 166,337.55 and 91,208.70

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Solution

The fourth proportional to 110,891.70, 166,337.55 and 91,208.70 is: 136,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,891.70 : 166,337.55 = 91,208.70 : x
  2. Step 2: Convert to fraction form
    110,891.70/166,337.55 = 91,208.70/x
  3. Step 3: Cross multiply
    110,891.70x = 166,337.55 × 91,208.70
  4. Step 4: Simplify right side
    110,891.70x = 15,171,431,696.69
  5. Step 5: Solve for x
    x = 15,171,431,696.69/110,891.70
  6. Step 6: Final answer
    x = 136,813.05

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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.