Home / 96,917.08-133,820.22-78,138.04

Finding the Fourth Proportional to 96,917.08, 133,820.22 and 78,138.04

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Solution

The fourth proportional to 96,917.08, 133,820.22 and 78,138.04 is: 107,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,917.08 : 133,820.22 = 78,138.04 : x
  2. Step 2: Convert to fraction form
    96,917.08/133,820.22 = 78,138.04/x
  3. Step 3: Cross multiply
    96,917.08x = 133,820.22 × 78,138.04
  4. Step 4: Simplify right side
    96,917.08x = 10,456,449,703.17
  5. Step 5: Solve for x
    x = 10,456,449,703.17/96,917.08
  6. Step 6: Final answer
    x = 107,890.68

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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.