Home / 91,391.71-125,840.19-79,997.44

Finding the Fourth Proportional to 91,391.71, 125,840.19 and 79,997.44

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Solution

The fourth proportional to 91,391.71, 125,840.19 and 79,997.44 is: 110,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,391.71 : 125,840.19 = 79,997.44 : x
  2. Step 2: Convert to fraction form
    91,391.71/125,840.19 = 79,997.44/x
  3. Step 3: Cross multiply
    91,391.71x = 125,840.19 × 79,997.44
  4. Step 4: Simplify right side
    91,391.71x = 10,066,892,906.42
  5. Step 5: Solve for x
    x = 10,066,892,906.42/91,391.71
  6. Step 6: Final answer
    x = 110,151.05

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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.