Home / 113,144.45-156,121.99-65,388.58

Finding the Fourth Proportional to 113,144.45, 156,121.99 and 65,388.58

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Solution

The fourth proportional to 113,144.45, 156,121.99 and 65,388.58 is: 90,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,144.45 : 156,121.99 = 65,388.58 : x
  2. Step 2: Convert to fraction form
    113,144.45/156,121.99 = 65,388.58/x
  3. Step 3: Cross multiply
    113,144.45x = 156,121.99 × 65,388.58
  4. Step 4: Simplify right side
    113,144.45x = 10,208,595,232.87
  5. Step 5: Solve for x
    x = 10,208,595,232.87/113,144.45
  6. Step 6: Final answer
    x = 90,226.21

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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.