Home / 117,243.45-161,795.27-66,272.68

Finding the Fourth Proportional to 117,243.45, 161,795.27 and 66,272.68

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Solution

The fourth proportional to 117,243.45, 161,795.27 and 66,272.68 is: 91,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,243.45 : 161,795.27 = 66,272.68 : x
  2. Step 2: Convert to fraction form
    117,243.45/161,795.27 = 66,272.68/x
  3. Step 3: Cross multiply
    117,243.45x = 161,795.27 × 66,272.68
  4. Step 4: Simplify right side
    117,243.45x = 10,722,606,522.15
  5. Step 5: Solve for x
    x = 10,722,606,522.15/117,243.45
  6. Step 6: Final answer
    x = 91,455.91

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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.