Home / 165,265.80-247,725.90-90,270.60

Finding the Fourth Proportional to 165,265.80, 247,725.90 and 90,270.60

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Solution

The fourth proportional to 165,265.80, 247,725.90 and 90,270.60 is: 135,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,265.80 : 247,725.90 = 90,270.60 : x
  2. Step 2: Convert to fraction form
    165,265.80/247,725.90 = 90,270.60/x
  3. Step 3: Cross multiply
    165,265.80x = 247,725.90 × 90,270.60
  4. Step 4: Simplify right side
    165,265.80x = 22,362,365,628.54
  5. Step 5: Solve for x
    x = 22,362,365,628.54/165,265.80
  6. Step 6: Final answer
    x = 135,311.51

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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.