Home / 136,474.50-188,336.16-79,887.09

Finding the Fourth Proportional to 136,474.50, 188,336.16 and 79,887.09

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Solution

The fourth proportional to 136,474.50, 188,336.16 and 79,887.09 is: 110,244.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,474.50 : 188,336.16 = 79,887.09 : x
  2. Step 2: Convert to fraction form
    136,474.50/188,336.16 = 79,887.09/x
  3. Step 3: Cross multiply
    136,474.50x = 188,336.16 × 79,887.09
  4. Step 4: Simplify right side
    136,474.50x = 15,045,627,764.17
  5. Step 5: Solve for x
    x = 15,045,627,764.17/136,474.50
  6. Step 6: Final answer
    x = 110,244.97

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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.