Home / 79,868.88-119,829.24-68,111.28

Finding the Fourth Proportional to 79,868.88, 119,829.24 and 68,111.28

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Solution

The fourth proportional to 79,868.88, 119,829.24 and 68,111.28 is: 102,189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,868.88 : 119,829.24 = 68,111.28 : x
  2. Step 2: Convert to fraction form
    79,868.88/119,829.24 = 68,111.28/x
  3. Step 3: Cross multiply
    79,868.88x = 119,829.24 × 68,111.28
  4. Step 4: Simplify right side
    79,868.88x = 8,161,722,917.83
  5. Step 5: Solve for x
    x = 8,161,722,917.83/79,868.88
  6. Step 6: Final answer
    x = 102,189.02

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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.