Home / 214,108.40-321,144.38-87,712.56

Finding the Fourth Proportional to 214,108.40, 321,144.38 and 87,712.56

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Solution

The fourth proportional to 214,108.40, 321,144.38 and 87,712.56 is: 131,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,108.40 : 321,144.38 = 87,712.56 : x
  2. Step 2: Convert to fraction form
    214,108.40/321,144.38 = 87,712.56/x
  3. Step 3: Cross multiply
    214,108.40x = 321,144.38 × 87,712.56
  4. Step 4: Simplify right side
    214,108.40x = 28,168,395,699.41
  5. Step 5: Solve for x
    x = 28,168,395,699.41/214,108.40
  6. Step 6: Final answer
    x = 131,561.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.