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Finding the Fourth Proportional to 119,394.11, 164,766.41 and 65,679.12

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Solution

The fourth proportional to 119,394.11, 164,766.41 and 65,679.12 is: 90,638.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,394.11 : 164,766.41 = 65,679.12 : x
  2. Step 2: Convert to fraction form
    119,394.11/164,766.41 = 65,679.12/x
  3. Step 3: Cross multiply
    119,394.11x = 164,766.41 × 65,679.12
  4. Step 4: Simplify right side
    119,394.11x = 10,821,712,485.96
  5. Step 5: Solve for x
    x = 10,821,712,485.96/119,394.11
  6. Step 6: Final answer
    x = 90,638.58

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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.