Home / 189,708.06-284,529.29-71,380.43

Finding the Fourth Proportional to 189,708.06, 284,529.29 and 71,380.43

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Solution

The fourth proportional to 189,708.06, 284,529.29 and 71,380.43 is: 107,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,708.06 : 284,529.29 = 71,380.43 : x
  2. Step 2: Convert to fraction form
    189,708.06/284,529.29 = 71,380.43/x
  3. Step 3: Cross multiply
    189,708.06x = 284,529.29 × 71,380.43
  4. Step 4: Simplify right side
    189,708.06x = 20,309,821,288.25
  5. Step 5: Solve for x
    x = 20,309,821,288.25/189,708.06
  6. Step 6: Final answer
    x = 107,058.29

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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.