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Finding the Fourth Proportional to 116,694, 161,066.88 and 66,422.16

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Solution

The fourth proportional to 116,694, 161,066.88 and 66,422.16 is: 91,679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,694 : 161,066.88 = 66,422.16 : x
  2. Step 2: Convert to fraction form
    116,694/161,066.88 = 66,422.16/x
  3. Step 3: Cross multiply
    116,694x = 161,066.88 × 66,422.16
  4. Step 4: Simplify right side
    116,694x = 10,698,410,074.06
  5. Step 5: Solve for x
    x = 10,698,410,074.06/116,694
  6. Step 6: Final answer
    x = 91,679.18

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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.