Home / 131,939.08-197,958.43-79,385.47

Finding the Fourth Proportional to 131,939.08, 197,958.43 and 79,385.47

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Solution

The fourth proportional to 131,939.08, 197,958.43 and 79,385.47 is: 119,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,939.08 : 197,958.43 = 79,385.47 : x
  2. Step 2: Convert to fraction form
    131,939.08/197,958.43 = 79,385.47/x
  3. Step 3: Cross multiply
    131,939.08x = 197,958.43 × 79,385.47
  4. Step 4: Simplify right side
    131,939.08x = 15,715,022,610.35
  5. Step 5: Solve for x
    x = 15,715,022,610.35/131,939.08
  6. Step 6: Final answer
    x = 119,108.17

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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.