Home / 155,941.25-215,198.77-84,321.10

Finding the Fourth Proportional to 155,941.25, 215,198.77 and 84,321.10

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Solution

The fourth proportional to 155,941.25, 215,198.77 and 84,321.10 is: 116,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,941.25 : 215,198.77 = 84,321.10 : x
  2. Step 2: Convert to fraction form
    155,941.25/215,198.77 = 84,321.10/x
  3. Step 3: Cross multiply
    155,941.25x = 215,198.77 × 84,321.10
  4. Step 4: Simplify right side
    155,941.25x = 18,145,797,005.05
  5. Step 5: Solve for x
    x = 18,145,797,005.05/155,941.25
  6. Step 6: Final answer
    x = 116,363.03

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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.