Home / 189,876.96-284,647.82-71,631.33

Finding the Fourth Proportional to 189,876.96, 284,647.82 and 71,631.33

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Solution

The fourth proportional to 189,876.96, 284,647.82 and 71,631.33 is: 107,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,876.96 : 284,647.82 = 71,631.33 : x
  2. Step 2: Convert to fraction form
    189,876.96/284,647.82 = 71,631.33/x
  3. Step 3: Cross multiply
    189,876.96x = 284,647.82 × 71,631.33
  4. Step 4: Simplify right side
    189,876.96x = 20,389,701,570.04
  5. Step 5: Solve for x
    x = 20,389,701,570.04/189,876.96
  6. Step 6: Final answer
    x = 107,383.76

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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.