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Finding the Fourth Proportional to 200,007.54, 300,011.60 and 81,678.88

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Solution

The fourth proportional to 200,007.54, 300,011.60 and 81,678.88 is: 122,518.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,007.54 : 300,011.60 = 81,678.88 : x
  2. Step 2: Convert to fraction form
    200,007.54/300,011.60 = 81,678.88/x
  3. Step 3: Cross multiply
    200,007.54x = 300,011.60 × 81,678.88
  4. Step 4: Simplify right side
    200,007.54x = 24,504,611,475.01
  5. Step 5: Solve for x
    x = 24,504,611,475.01/200,007.54
  6. Step 6: Final answer
    x = 122,518.44

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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.