Home / 189,979.43-284,863.85-77,738.34

Finding the Fourth Proportional to 189,979.43, 284,863.85 and 77,738.34

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Solution

The fourth proportional to 189,979.43, 284,863.85 and 77,738.34 is: 116,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,979.43 : 284,863.85 = 77,738.34 : x
  2. Step 2: Convert to fraction form
    189,979.43/284,863.85 = 77,738.34/x
  3. Step 3: Cross multiply
    189,979.43x = 284,863.85 × 77,738.34
  4. Step 4: Simplify right side
    189,979.43x = 22,144,842,436.32
  5. Step 5: Solve for x
    x = 22,144,842,436.32/189,979.43
  6. Step 6: Final answer
    x = 116,564.42

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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.