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Finding the Fourth Proportional to 136,204.80, 203,869.44 and 72,866.88

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Solution

The fourth proportional to 136,204.80, 203,869.44 and 72,866.88 is: 109,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,204.80 : 203,869.44 = 72,866.88 : x
  2. Step 2: Convert to fraction form
    136,204.80/203,869.44 = 72,866.88/x
  3. Step 3: Cross multiply
    136,204.80x = 203,869.44 × 72,866.88
  4. Step 4: Simplify right side
    136,204.80x = 14,855,330,020.15
  5. Step 5: Solve for x
    x = 14,855,330,020.15/136,204.80
  6. Step 6: Final answer
    x = 109,066.13

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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.