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Finding the Fourth Proportional to 136,909.40, 204,960.90 and 102,003.80

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Solution

The fourth proportional to 136,909.40, 204,960.90 and 102,003.80 is: 152,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,909.40 : 204,960.90 = 102,003.80 : x
  2. Step 2: Convert to fraction form
    136,909.40/204,960.90 = 102,003.80/x
  3. Step 3: Cross multiply
    136,909.40x = 204,960.90 × 102,003.80
  4. Step 4: Simplify right side
    136,909.40x = 20,906,790,651.42
  5. Step 5: Solve for x
    x = 20,906,790,651.42/136,909.40
  6. Step 6: Final answer
    x = 152,705.30

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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.