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Finding the Fourth Proportional to 117,206.00, 161,736.29 and 66,220.87

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Solution

The fourth proportional to 117,206.00, 161,736.29 and 66,220.87 is: 91,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,206.00 : 161,736.29 = 66,220.87 : x
  2. Step 2: Convert to fraction form
    117,206.00/161,736.29 = 66,220.87/x
  3. Step 3: Cross multiply
    117,206.00x = 161,736.29 × 66,220.87
  4. Step 4: Simplify right side
    117,206.00x = 10,710,317,098.93
  5. Step 5: Solve for x
    x = 10,710,317,098.93/117,206.00
  6. Step 6: Final answer
    x = 91,380.28

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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.