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Finding the Fourth Proportional to 118,805.06, 163,910.62 and 67,781.14

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Solution

The fourth proportional to 118,805.06, 163,910.62 and 67,781.14 is: 93,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,805.06 : 163,910.62 = 67,781.14 : x
  2. Step 2: Convert to fraction form
    118,805.06/163,910.62 = 67,781.14/x
  3. Step 3: Cross multiply
    118,805.06x = 163,910.62 × 67,781.14
  4. Step 4: Simplify right side
    118,805.06x = 11,110,048,356.66
  5. Step 5: Solve for x
    x = 11,110,048,356.66/118,805.06
  6. Step 6: Final answer
    x = 93,514.94

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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.