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Finding the Fourth Proportional to 138,003.62, 207,005.42 and 44,509.37

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Solution

The fourth proportional to 138,003.62, 207,005.42 and 44,509.37 is: 66,764.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,003.62 : 207,005.42 = 44,509.37 : x
  2. Step 2: Convert to fraction form
    138,003.62/207,005.42 = 44,509.37/x
  3. Step 3: Cross multiply
    138,003.62x = 207,005.42 × 44,509.37
  4. Step 4: Simplify right side
    138,003.62x = 9,213,680,830.79
  5. Step 5: Solve for x
    x = 9,213,680,830.79/138,003.62
  6. Step 6: Final answer
    x = 66,764.05

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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.