Home / 131,105.50-180,993.64-88,309.96

Finding the Fourth Proportional to 131,105.50, 180,993.64 and 88,309.96

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Solution

The fourth proportional to 131,105.50, 180,993.64 and 88,309.96 is: 121,913.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,105.50 : 180,993.64 = 88,309.96 : x
  2. Step 2: Convert to fraction form
    131,105.50/180,993.64 = 88,309.96/x
  3. Step 3: Cross multiply
    131,105.50x = 180,993.64 × 88,309.96
  4. Step 4: Simplify right side
    131,105.50x = 15,983,541,108.65
  5. Step 5: Solve for x
    x = 15,983,541,108.65/131,105.50
  6. Step 6: Final answer
    x = 121,913.58

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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.