Home / 128,647.20-192,999.15-43,255.14

Finding the Fourth Proportional to 128,647.20, 192,999.15 and 43,255.14

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Solution

The fourth proportional to 128,647.20, 192,999.15 and 43,255.14 is: 64,892.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,647.20 : 192,999.15 = 43,255.14 : x
  2. Step 2: Convert to fraction form
    128,647.20/192,999.15 = 43,255.14/x
  3. Step 3: Cross multiply
    128,647.20x = 192,999.15 × 43,255.14
  4. Step 4: Simplify right side
    128,647.20x = 8,348,205,253.13
  5. Step 5: Solve for x
    x = 8,348,205,253.13/128,647.20
  6. Step 6: Final answer
    x = 64,892.24

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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.