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Finding the Fourth Proportional to 127,898.66, 176,513.31 and 81,363.80

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Solution

The fourth proportional to 127,898.66, 176,513.31 and 81,363.80 is: 112,290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,898.66 : 176,513.31 = 81,363.80 : x
  2. Step 2: Convert to fraction form
    127,898.66/176,513.31 = 81,363.80/x
  3. Step 3: Cross multiply
    127,898.66x = 176,513.31 × 81,363.80
  4. Step 4: Simplify right side
    127,898.66x = 14,361,794,093.46
  5. Step 5: Solve for x
    x = 14,361,794,093.46/127,898.66
  6. Step 6: Final answer
    x = 112,290.42

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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.