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Finding the Fourth Proportional to 117,377.66, 161,984.83 and 66,389.39

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Solution

The fourth proportional to 117,377.66, 161,984.83 and 66,389.39 is: 91,619.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,377.66 : 161,984.83 = 66,389.39 : x
  2. Step 2: Convert to fraction form
    117,377.66/161,984.83 = 66,389.39/x
  3. Step 3: Cross multiply
    117,377.66x = 161,984.83 × 66,389.39
  4. Step 4: Simplify right side
    117,377.66x = 10,754,074,052.95
  5. Step 5: Solve for x
    x = 10,754,074,052.95/117,377.66
  6. Step 6: Final answer
    x = 91,619.43

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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.