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Finding the Fourth Proportional to 165,781.60, 248,611.65 and 53,491.30

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Solution

The fourth proportional to 165,781.60, 248,611.65 and 53,491.30 is: 80,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,781.60 : 248,611.65 = 53,491.30 : x
  2. Step 2: Convert to fraction form
    165,781.60/248,611.65 = 53,491.30/x
  3. Step 3: Cross multiply
    165,781.60x = 248,611.65 × 53,491.30
  4. Step 4: Simplify right side
    165,781.60x = 13,298,560,353.65
  5. Step 5: Solve for x
    x = 13,298,560,353.65/165,781.60
  6. Step 6: Final answer
    x = 80,217.35

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1.5x scale

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.