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Finding the Fourth Proportional to 175,893.80, 263,840.70 and 81,123.80

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Solution

The fourth proportional to 175,893.80, 263,840.70 and 81,123.80 is: 121,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,893.80 : 263,840.70 = 81,123.80 : x
  2. Step 2: Convert to fraction form
    175,893.80/263,840.70 = 81,123.80/x
  3. Step 3: Cross multiply
    175,893.80x = 263,840.70 × 81,123.80
  4. Step 4: Simplify right side
    175,893.80x = 21,403,760,178.66
  5. Step 5: Solve for x
    x = 21,403,760,178.66/175,893.80
  6. Step 6: Final answer
    x = 121,685.70

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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.