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Finding the Fourth Proportional to 166,187.61, 229,338.81 and 90,736.11

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Solution

The fourth proportional to 166,187.61, 229,338.81 and 90,736.11 is: 125,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,187.61 : 229,338.81 = 90,736.11 : x
  2. Step 2: Convert to fraction form
    166,187.61/229,338.81 = 90,736.11/x
  3. Step 3: Cross multiply
    166,187.61x = 229,338.81 × 90,736.11
  4. Step 4: Simplify right side
    166,187.61x = 20,809,311,491.43
  5. Step 5: Solve for x
    x = 20,809,311,491.43/166,187.61
  6. Step 6: Final answer
    x = 125,215.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.