Home / 117,640.27-162,343.16-66,662.70

Finding the Fourth Proportional to 117,640.27, 162,343.16 and 66,662.70

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Solution

The fourth proportional to 117,640.27, 162,343.16 and 66,662.70 is: 91,994.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,640.27 : 162,343.16 = 66,662.70 : x
  2. Step 2: Convert to fraction form
    117,640.27/162,343.16 = 66,662.70/x
  3. Step 3: Cross multiply
    117,640.27x = 162,343.16 × 66,662.70
  4. Step 4: Simplify right side
    117,640.27x = 10,822,233,472.98
  5. Step 5: Solve for x
    x = 10,822,233,472.98/117,640.27
  6. Step 6: Final answer
    x = 91,994.29

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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.