Home / 128,006.32-192,036.78-49,119.88

Finding the Fourth Proportional to 128,006.32, 192,036.78 and 49,119.88

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Solution

The fourth proportional to 128,006.32, 192,036.78 and 49,119.88 is: 73,690.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,006.32 : 192,036.78 = 49,119.88 : x
  2. Step 2: Convert to fraction form
    128,006.32/192,036.78 = 49,119.88/x
  3. Step 3: Cross multiply
    128,006.32x = 192,036.78 × 49,119.88
  4. Step 4: Simplify right side
    128,006.32x = 9,432,823,589.19
  5. Step 5: Solve for x
    x = 9,432,823,589.19/128,006.32
  6. Step 6: Final answer
    x = 73,690.30

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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.