Home / 214,197.90-321,205.77-87,750.78

Finding the Fourth Proportional to 214,197.90, 321,205.77 and 87,750.78

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Solution

The fourth proportional to 214,197.90, 321,205.77 and 87,750.78 is: 131,588.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,197.90 : 321,205.77 = 87,750.78 : x
  2. Step 2: Convert to fraction form
    214,197.90/321,205.77 = 87,750.78/x
  3. Step 3: Cross multiply
    214,197.90x = 321,205.77 × 87,750.78
  4. Step 4: Simplify right side
    214,197.90x = 28,186,056,858.00
  5. Step 5: Solve for x
    x = 28,186,056,858.00/214,197.90
  6. Step 6: Final answer
    x = 131,588.86

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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.