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Finding the Fourth Proportional to 185,363.90, 278,045.85 and 67,039.10

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Solution

The fourth proportional to 185,363.90, 278,045.85 and 67,039.10 is: 100,558.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,363.90 : 278,045.85 = 67,039.10 : x
  2. Step 2: Convert to fraction form
    185,363.90/278,045.85 = 67,039.10/x
  3. Step 3: Cross multiply
    185,363.90x = 278,045.85 × 67,039.10
  4. Step 4: Simplify right side
    185,363.90x = 18,639,943,542.74
  5. Step 5: Solve for x
    x = 18,639,943,542.74/185,363.90
  6. Step 6: Final answer
    x = 100,558.65

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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.