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Finding the Fourth Proportional to 185,433.80, 278,027.81 and 67,089.74

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Solution

The fourth proportional to 185,433.80, 278,027.81 and 67,089.74 is: 100,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,433.80 : 278,027.81 = 67,089.74 : x
  2. Step 2: Convert to fraction form
    185,433.80/278,027.81 = 67,089.74/x
  3. Step 3: Cross multiply
    185,433.80x = 278,027.81 × 67,089.74
  4. Step 4: Simplify right side
    185,433.80x = 18,652,813,150.22
  5. Step 5: Solve for x
    x = 18,652,813,150.22/185,433.80
  6. Step 6: Final answer
    x = 100,590.15

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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.