Home / 128,165.08-192,080.40-92,745.70

Finding the Fourth Proportional to 128,165.08, 192,080.40 and 92,745.70

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Solution

The fourth proportional to 128,165.08, 192,080.40 and 92,745.70 is: 138,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,165.08 : 192,080.40 = 92,745.70 : x
  2. Step 2: Convert to fraction form
    128,165.08/192,080.40 = 92,745.70/x
  3. Step 3: Cross multiply
    128,165.08x = 192,080.40 × 92,745.70
  4. Step 4: Simplify right side
    128,165.08x = 17,814,631,866.35
  5. Step 5: Solve for x
    x = 17,814,631,866.35/128,165.08
  6. Step 6: Final answer
    x = 138,997.55

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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.