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Finding the Fourth Proportional to 117,363.04, 161,969.03 and 66,375.78

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Solution

The fourth proportional to 117,363.04, 161,969.03 and 66,375.78 is: 91,603.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,363.04 : 161,969.03 = 66,375.78 : x
  2. Step 2: Convert to fraction form
    117,363.04/161,969.03 = 66,375.78/x
  3. Step 3: Cross multiply
    117,363.04x = 161,969.03 × 66,375.78
  4. Step 4: Simplify right side
    117,363.04x = 10,750,820,370.21
  5. Step 5: Solve for x
    x = 10,750,820,370.21/117,363.04
  6. Step 6: Final answer
    x = 91,603.12

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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.