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Finding the Fourth Proportional to 116,716.68, 161,069.76 and 66,415.68

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Solution

The fourth proportional to 116,716.68, 161,069.76 and 66,415.68 is: 91,654.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,716.68 : 161,069.76 = 66,415.68 : x
  2. Step 2: Convert to fraction form
    116,716.68/161,069.76 = 66,415.68/x
  3. Step 3: Cross multiply
    116,716.68x = 161,069.76 × 66,415.68
  4. Step 4: Simplify right side
    116,716.68x = 10,697,557,637.84
  5. Step 5: Solve for x
    x = 10,697,557,637.84/116,716.68
  6. Step 6: Final answer
    x = 91,654.06

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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.