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Finding the Fourth Proportional to 133,047.10, 199,570.65 and 115,939.90

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Solution

The fourth proportional to 133,047.10, 199,570.65 and 115,939.90 is: 173,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,047.10 : 199,570.65 = 115,939.90 : x
  2. Step 2: Convert to fraction form
    133,047.10/199,570.65 = 115,939.90/x
  3. Step 3: Cross multiply
    133,047.10x = 199,570.65 × 115,939.90
  4. Step 4: Simplify right side
    133,047.10x = 23,138,201,203.94
  5. Step 5: Solve for x
    x = 23,138,201,203.94/133,047.10
  6. Step 6: Final answer
    x = 173,909.85

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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.