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Finding the Fourth Proportional to 137,174.56, 205,621.04 and 66,967.52

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Solution

The fourth proportional to 137,174.56, 205,621.04 and 66,967.52 is: 100,382.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,174.56 : 205,621.04 = 66,967.52 : x
  2. Step 2: Convert to fraction form
    137,174.56/205,621.04 = 66,967.52/x
  3. Step 3: Cross multiply
    137,174.56x = 205,621.04 × 66,967.52
  4. Step 4: Simplify right side
    137,174.56x = 13,769,931,108.62
  5. Step 5: Solve for x
    x = 13,769,931,108.62/137,174.56
  6. Step 6: Final answer
    x = 100,382.54

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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.