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Finding the Fourth Proportional to 117,179.91, 161,696.71 and 65,487.46

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Solution

The fourth proportional to 117,179.91, 161,696.71 and 65,487.46 is: 90,366.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,179.91 : 161,696.71 = 65,487.46 : x
  2. Step 2: Convert to fraction form
    117,179.91/161,696.71 = 65,487.46/x
  3. Step 3: Cross multiply
    117,179.91x = 161,696.71 × 65,487.46
  4. Step 4: Simplify right side
    117,179.91x = 10,589,106,828.26
  5. Step 5: Solve for x
    x = 10,589,106,828.26/117,179.91
  6. Step 6: Final answer
    x = 90,366.23

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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.