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Finding the Fourth Proportional to 117,066.38, 161,551.50 and 66,089.84

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Solution

The fourth proportional to 117,066.38, 161,551.50 and 66,089.84 is: 91,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,066.38 : 161,551.50 = 66,089.84 : x
  2. Step 2: Convert to fraction form
    117,066.38/161,551.50 = 66,089.84/x
  3. Step 3: Cross multiply
    117,066.38x = 161,551.50 × 66,089.84
  4. Step 4: Simplify right side
    117,066.38x = 10,676,912,786.76
  5. Step 5: Solve for x
    x = 10,676,912,786.76/117,066.38
  6. Step 6: Final answer
    x = 91,203.92

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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.