Home / 109,138.08-150,650.37-68,878.11

Finding the Fourth Proportional to 109,138.08, 150,650.37 and 68,878.11

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Solution

The fourth proportional to 109,138.08, 150,650.37 and 68,878.11 is: 95,076.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,138.08 : 150,650.37 = 68,878.11 : x
  2. Step 2: Convert to fraction form
    109,138.08/150,650.37 = 68,878.11/x
  3. Step 3: Cross multiply
    109,138.08x = 150,650.37 × 68,878.11
  4. Step 4: Simplify right side
    109,138.08x = 10,376,512,756.40
  5. Step 5: Solve for x
    x = 10,376,512,756.40/109,138.08
  6. Step 6: Final answer
    x = 95,076.92

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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.