Home / 68,149.09-102,189.77-43,170.21

Finding the Fourth Proportional to 68,149.09, 102,189.77 and 43,170.21

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Solution

The fourth proportional to 68,149.09, 102,189.77 and 43,170.21 is: 64,733.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,149.09 : 102,189.77 = 43,170.21 : x
  2. Step 2: Convert to fraction form
    68,149.09/102,189.77 = 43,170.21/x
  3. Step 3: Cross multiply
    68,149.09x = 102,189.77 × 43,170.21
  4. Step 4: Simplify right side
    68,149.09x = 4,411,553,830.75
  5. Step 5: Solve for x
    x = 4,411,553,830.75/68,149.09
  6. Step 6: Final answer
    x = 64,733.86

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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.