Home / 117,324.78-161,906.07-66,336.63

Finding the Fourth Proportional to 117,324.78, 161,906.07 and 66,336.63

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Solution

The fourth proportional to 117,324.78, 161,906.07 and 66,336.63 is: 91,543.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,324.78 : 161,906.07 = 66,336.63 : x
  2. Step 2: Convert to fraction form
    117,324.78/161,906.07 = 66,336.63/x
  3. Step 3: Cross multiply
    117,324.78x = 161,906.07 × 66,336.63
  4. Step 4: Simplify right side
    117,324.78x = 10,740,303,060.34
  5. Step 5: Solve for x
    x = 10,740,303,060.34/117,324.78
  6. Step 6: Final answer
    x = 91,543.35

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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.