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Finding the Fourth Proportional to 138,785.94, 208,179.45 and 33,605.01

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Solution

The fourth proportional to 138,785.94, 208,179.45 and 33,605.01 is: 50,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,785.94 : 208,179.45 = 33,605.01 : x
  2. Step 2: Convert to fraction form
    138,785.94/208,179.45 = 33,605.01/x
  3. Step 3: Cross multiply
    138,785.94x = 208,179.45 × 33,605.01
  4. Step 4: Simplify right side
    138,785.94x = 6,995,872,499.04
  5. Step 5: Solve for x
    x = 6,995,872,499.04/138,785.94
  6. Step 6: Final answer
    x = 50,407.65

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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.