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Finding the Fourth Proportional to 112,673.20, 168,982.80 and 65,185.60

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Solution

The fourth proportional to 112,673.20, 168,982.80 and 65,185.60 is: 97,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,673.20 : 168,982.80 = 65,185.60 : x
  2. Step 2: Convert to fraction form
    112,673.20/168,982.80 = 65,185.60/x
  3. Step 3: Cross multiply
    112,673.20x = 168,982.80 × 65,185.60
  4. Step 4: Simplify right side
    112,673.20x = 11,015,245,207.68
  5. Step 5: Solve for x
    x = 11,015,245,207.68/112,673.20
  6. Step 6: Final answer
    x = 97,762.78

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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.