Home / 131,216.22-181,163.88-100,945.71

Finding the Fourth Proportional to 131,216.22, 181,163.88 and 100,945.71

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Solution

The fourth proportional to 131,216.22, 181,163.88 and 100,945.71 is: 139,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,216.22 : 181,163.88 = 100,945.71 : x
  2. Step 2: Convert to fraction form
    131,216.22/181,163.88 = 100,945.71/x
  3. Step 3: Cross multiply
    131,216.22x = 181,163.88 × 100,945.71
  4. Step 4: Simplify right side
    131,216.22x = 18,287,716,492.95
  5. Step 5: Solve for x
    x = 18,287,716,492.95/131,216.22
  6. Step 6: Final answer
    x = 139,370.85

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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.