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Finding the Fourth Proportional to 165,781.20, 248,671.80 and 102,795.60

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Solution

The fourth proportional to 165,781.20, 248,671.80 and 102,795.60 is: 154,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,781.20 : 248,671.80 = 102,795.60 : x
  2. Step 2: Convert to fraction form
    165,781.20/248,671.80 = 102,795.60/x
  3. Step 3: Cross multiply
    165,781.20x = 248,671.80 × 102,795.60
  4. Step 4: Simplify right side
    165,781.20x = 25,562,366,884.08
  5. Step 5: Solve for x
    x = 25,562,366,884.08/165,781.20
  6. Step 6: Final answer
    x = 154,193.40

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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.