Home / 155,716.43-214,874.60-87,744.47

Finding the Fourth Proportional to 155,716.43, 214,874.60 and 87,744.47

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Solution

The fourth proportional to 155,716.43, 214,874.60 and 87,744.47 is: 121,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,716.43 : 214,874.60 = 87,744.47 : x
  2. Step 2: Convert to fraction form
    155,716.43/214,874.60 = 87,744.47/x
  3. Step 3: Cross multiply
    155,716.43x = 214,874.60 × 87,744.47
  4. Step 4: Simplify right side
    155,716.43x = 18,854,056,380.37
  5. Step 5: Solve for x
    x = 18,854,056,380.37/155,716.43
  6. Step 6: Final answer
    x = 121,079.43

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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.