Home / 143,121.88-214,256.22-86,792.32

Finding the Fourth Proportional to 143,121.88, 214,256.22 and 86,792.32

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Solution

The fourth proportional to 143,121.88, 214,256.22 and 86,792.32 is: 129,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,121.88 : 214,256.22 = 86,792.32 : x
  2. Step 2: Convert to fraction form
    143,121.88/214,256.22 = 86,792.32/x
  3. Step 3: Cross multiply
    143,121.88x = 214,256.22 × 86,792.32
  4. Step 4: Simplify right side
    143,121.88x = 18,595,794,408.23
  5. Step 5: Solve for x
    x = 18,595,794,408.23/143,121.88
  6. Step 6: Final answer
    x = 129,929.78

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1.5x scale

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.