Home / 91,391.99-125,840.57-79,997.72

Finding the Fourth Proportional to 91,391.99, 125,840.57 and 79,997.72

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Solution

The fourth proportional to 91,391.99, 125,840.57 and 79,997.72 is: 110,151.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,391.99 : 125,840.57 = 79,997.72 : x
  2. Step 2: Convert to fraction form
    91,391.99/125,840.57 = 79,997.72/x
  3. Step 3: Cross multiply
    91,391.99x = 125,840.57 × 79,997.72
  4. Step 4: Simplify right side
    91,391.99x = 10,066,959,198.10
  5. Step 5: Solve for x
    x = 10,066,959,198.10/91,391.99
  6. Step 6: Final answer
    x = 110,151.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.