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Finding the Fourth Proportional to 165,690.60, 248,568.30 and 70,920.60

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Solution

The fourth proportional to 165,690.60, 248,568.30 and 70,920.60 is: 106,394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,690.60 : 248,568.30 = 70,920.60 : x
  2. Step 2: Convert to fraction form
    165,690.60/248,568.30 = 70,920.60/x
  3. Step 3: Cross multiply
    165,690.60x = 248,568.30 × 70,920.60
  4. Step 4: Simplify right side
    165,690.60x = 17,628,612,976.98
  5. Step 5: Solve for x
    x = 17,628,612,976.98/165,690.60
  6. Step 6: Final answer
    x = 106,394.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.