Home / 155,833.20-215,069.64-102,163.44

Finding the Fourth Proportional to 155,833.20, 215,069.64 and 102,163.44

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Solution

The fourth proportional to 155,833.20, 215,069.64 and 102,163.44 is: 140,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,833.20 : 215,069.64 = 102,163.44 : x
  2. Step 2: Convert to fraction form
    155,833.20/215,069.64 = 102,163.44/x
  3. Step 3: Cross multiply
    155,833.20x = 215,069.64 × 102,163.44
  4. Step 4: Simplify right side
    155,833.20x = 21,972,254,261.96
  5. Step 5: Solve for x
    x = 21,972,254,261.96/155,833.20
  6. Step 6: Final answer
    x = 140,998.54

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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.