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Finding the Fourth Proportional to 116,892.87, 161,308.94 and 65,905.16

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Solution

The fourth proportional to 116,892.87, 161,308.94 and 65,905.16 is: 90,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,892.87 : 161,308.94 = 65,905.16 : x
  2. Step 2: Convert to fraction form
    116,892.87/161,308.94 = 65,905.16/x
  3. Step 3: Cross multiply
    116,892.87x = 161,308.94 × 65,905.16
  4. Step 4: Simplify right side
    116,892.87x = 10,631,091,500.13
  5. Step 5: Solve for x
    x = 10,631,091,500.13/116,892.87
  6. Step 6: Final answer
    x = 90,947.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.