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Finding the Fourth Proportional to 200,128.53, 300,192.81 and 94,890.09

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Solution

The fourth proportional to 200,128.53, 300,192.81 and 94,890.09 is: 142,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,128.53 : 300,192.81 = 94,890.09 : x
  2. Step 2: Convert to fraction form
    200,128.53/300,192.81 = 94,890.09/x
  3. Step 3: Cross multiply
    200,128.53x = 300,192.81 × 94,890.09
  4. Step 4: Simplify right side
    200,128.53x = 28,485,322,758.25
  5. Step 5: Solve for x
    x = 28,485,322,758.25/200,128.53
  6. Step 6: Final answer
    x = 142,335.14

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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.