Home / 185,389.43-278,105.75-67,116.47

Finding the Fourth Proportional to 185,389.43, 278,105.75 and 67,116.47

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Solution

The fourth proportional to 185,389.43, 278,105.75 and 67,116.47 is: 100,682.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,389.43 : 278,105.75 = 67,116.47 : x
  2. Step 2: Convert to fraction form
    185,389.43/278,105.75 = 67,116.47/x
  3. Step 3: Cross multiply
    185,389.43x = 278,105.75 × 67,116.47
  4. Step 4: Simplify right side
    185,389.43x = 18,665,475,891.12
  5. Step 5: Solve for x
    x = 18,665,475,891.12/185,389.43
  6. Step 6: Final answer
    x = 100,682.52

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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.