Home / 131,400.21-181,346.48-80,447.23

Finding the Fourth Proportional to 131,400.21, 181,346.48 and 80,447.23

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Solution

The fourth proportional to 131,400.21, 181,346.48 and 80,447.23 is: 111,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,400.21 : 181,346.48 = 80,447.23 : x
  2. Step 2: Convert to fraction form
    131,400.21/181,346.48 = 80,447.23/x
  3. Step 3: Cross multiply
    131,400.21x = 181,346.48 × 80,447.23
  4. Step 4: Simplify right side
    131,400.21x = 14,588,821,986.25
  5. Step 5: Solve for x
    x = 14,588,821,986.25/131,400.21
  6. Step 6: Final answer
    x = 111,025.87

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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.