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Finding the Fourth Proportional to 200,090.52, 300,060.45 and 81,698.49

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Solution

The fourth proportional to 200,090.52, 300,060.45 and 81,698.49 is: 122,516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,090.52 : 300,060.45 = 81,698.49 : x
  2. Step 2: Convert to fraction form
    200,090.52/300,060.45 = 81,698.49/x
  3. Step 3: Cross multiply
    200,090.52x = 300,060.45 × 81,698.49
  4. Step 4: Simplify right side
    200,090.52x = 24,514,485,673.72
  5. Step 5: Solve for x
    x = 24,514,485,673.72/200,090.52
  6. Step 6: Final answer
    x = 122,516.98

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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.