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Finding the Fourth Proportional to 136,612.20, 204,918.30 and 84,124.20

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Solution

The fourth proportional to 136,612.20, 204,918.30 and 84,124.20 is: 126,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,612.20 : 204,918.30 = 84,124.20 : x
  2. Step 2: Convert to fraction form
    136,612.20/204,918.30 = 84,124.20/x
  3. Step 3: Cross multiply
    136,612.20x = 204,918.30 × 84,124.20
  4. Step 4: Simplify right side
    136,612.20x = 17,238,588,052.86
  5. Step 5: Solve for x
    x = 17,238,588,052.86/136,612.20
  6. Step 6: Final answer
    x = 126,186.30

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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.