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Finding the Fourth Proportional to 171,508.86, 236,606.81 and 103,487.90

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Solution

The fourth proportional to 171,508.86, 236,606.81 and 103,487.90 is: 142,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,508.86 : 236,606.81 = 103,487.90 : x
  2. Step 2: Convert to fraction form
    171,508.86/236,606.81 = 103,487.90/x
  3. Step 3: Cross multiply
    171,508.86x = 236,606.81 × 103,487.90
  4. Step 4: Simplify right side
    171,508.86x = 24,485,940,192.13
  5. Step 5: Solve for x
    x = 24,485,940,192.13/171,508.86
  6. Step 6: Final answer
    x = 142,767.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.