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Finding the Fourth Proportional to 199,615.80, 299,423.70 and 136,630.20

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Solution

The fourth proportional to 199,615.80, 299,423.70 and 136,630.20 is: 204,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,615.80 : 299,423.70 = 136,630.20 : x
  2. Step 2: Convert to fraction form
    199,615.80/299,423.70 = 136,630.20/x
  3. Step 3: Cross multiply
    199,615.80x = 299,423.70 × 136,630.20
  4. Step 4: Simplify right side
    199,615.80x = 40,910,320,015.74
  5. Step 5: Solve for x
    x = 40,910,320,015.74/199,615.80
  6. Step 6: Final answer
    x = 204,945.30

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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.