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Finding the Fourth Proportional to 200,011.25, 300,032.15 and 66,891.76

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Solution

The fourth proportional to 200,011.25, 300,032.15 and 66,891.76 is: 100,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,011.25 : 300,032.15 = 66,891.76 : x
  2. Step 2: Convert to fraction form
    200,011.25/300,032.15 = 66,891.76/x
  3. Step 3: Cross multiply
    200,011.25x = 300,032.15 × 66,891.76
  4. Step 4: Simplify right side
    200,011.25x = 20,069,677,485.54
  5. Step 5: Solve for x
    x = 20,069,677,485.54/200,011.25
  6. Step 6: Final answer
    x = 100,342.74

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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.