Home / 155,214.20-214,213.36-86,310.55

Finding the Fourth Proportional to 155,214.20, 214,213.36 and 86,310.55

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Solution

The fourth proportional to 155,214.20, 214,213.36 and 86,310.55 is: 119,118.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,214.20 : 214,213.36 = 86,310.55 : x
  2. Step 2: Convert to fraction form
    155,214.20/214,213.36 = 86,310.55/x
  3. Step 3: Cross multiply
    155,214.20x = 214,213.36 × 86,310.55
  4. Step 4: Simplify right side
    155,214.20x = 18,488,872,918.95
  5. Step 5: Solve for x
    x = 18,488,872,918.95/155,214.20
  6. Step 6: Final answer
    x = 119,118.44

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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.