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Finding the Fourth Proportional to 117,371.28, 161,955 and 66,370.44

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Solution

The fourth proportional to 117,371.28, 161,955 and 66,370.44 is: 91,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,371.28 : 161,955 = 66,370.44 : x
  2. Step 2: Convert to fraction form
    117,371.28/161,955 = 66,370.44/x
  3. Step 3: Cross multiply
    117,371.28x = 161,955 × 66,370.44
  4. Step 4: Simplify right side
    117,371.28x = 10,749,024,610.20
  5. Step 5: Solve for x
    x = 10,749,024,610.20/117,371.28
  6. Step 6: Final answer
    x = 91,581.39

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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.