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Finding the Fourth Proportional to 120,252.62, 165,948.81 and 66,539.90

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Solution

The fourth proportional to 120,252.62, 165,948.81 and 66,539.90 is: 91,825.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,252.62 : 165,948.81 = 66,539.90 : x
  2. Step 2: Convert to fraction form
    120,252.62/165,948.81 = 66,539.90/x
  3. Step 3: Cross multiply
    120,252.62x = 165,948.81 × 66,539.90
  4. Step 4: Simplify right side
    120,252.62x = 11,042,217,222.52
  5. Step 5: Solve for x
    x = 11,042,217,222.52/120,252.62
  6. Step 6: Final answer
    x = 91,825.17

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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.