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Finding the Fourth Proportional to 131,661.09, 197,512.11 and 42,893.91

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Solution

The fourth proportional to 131,661.09, 197,512.11 and 42,893.91 is: 64,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.09 : 197,512.11 = 42,893.91 : x
  2. Step 2: Convert to fraction form
    131,661.09/197,512.11 = 42,893.91/x
  3. Step 3: Cross multiply
    131,661.09x = 197,512.11 × 42,893.91
  4. Step 4: Simplify right side
    131,661.09x = 8,472,066,670.25
  5. Step 5: Solve for x
    x = 8,472,066,670.25/131,661.09
  6. Step 6: Final answer
    x = 64,347.54

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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.