Home / 155,270.20-214,295.52-87,292.78

Finding the Fourth Proportional to 155,270.20, 214,295.52 and 87,292.78

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Solution

The fourth proportional to 155,270.20, 214,295.52 and 87,292.78 is: 120,476.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,270.20 : 214,295.52 = 87,292.78 : x
  2. Step 2: Convert to fraction form
    155,270.20/214,295.52 = 87,292.78/x
  3. Step 3: Cross multiply
    155,270.20x = 214,295.52 × 87,292.78
  4. Step 4: Simplify right side
    155,270.20x = 18,706,451,682.35
  5. Step 5: Solve for x
    x = 18,706,451,682.35/155,270.20
  6. Step 6: Final answer
    x = 120,476.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.