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Finding the Fourth Proportional to 118,771.38, 163,904.31 and 65,058.66

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Solution

The fourth proportional to 118,771.38, 163,904.31 and 65,058.66 is: 89,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,771.38 : 163,904.31 = 65,058.66 : x
  2. Step 2: Convert to fraction form
    118,771.38/163,904.31 = 65,058.66/x
  3. Step 3: Cross multiply
    118,771.38x = 163,904.31 × 65,058.66
  4. Step 4: Simplify right side
    118,771.38x = 10,663,394,776.82
  5. Step 5: Solve for x
    x = 10,663,394,776.82/118,771.38
  6. Step 6: Final answer
    x = 89,780.84

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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.