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Finding the Fourth Proportional to 149,189.45, 205,884.79 and 84,662.92

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Solution

The fourth proportional to 149,189.45, 205,884.79 and 84,662.92 is: 116,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,189.45 : 205,884.79 = 84,662.92 : x
  2. Step 2: Convert to fraction form
    149,189.45/205,884.79 = 84,662.92/x
  3. Step 3: Cross multiply
    149,189.45x = 205,884.79 × 84,662.92
  4. Step 4: Simplify right side
    149,189.45x = 17,430,807,550.69
  5. Step 5: Solve for x
    x = 17,430,807,550.69/149,189.45
  6. Step 6: Final answer
    x = 116,836.73

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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.