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Finding the Fourth Proportional to 174,699.70, 262,049.55 and 81,387.70

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Solution

The fourth proportional to 174,699.70, 262,049.55 and 81,387.70 is: 122,081.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,699.70 : 262,049.55 = 81,387.70 : x
  2. Step 2: Convert to fraction form
    174,699.70/262,049.55 = 81,387.70/x
  3. Step 3: Cross multiply
    174,699.70x = 262,049.55 × 81,387.70
  4. Step 4: Simplify right side
    174,699.70x = 21,327,610,160.54
  5. Step 5: Solve for x
    x = 21,327,610,160.54/174,699.70
  6. Step 6: Final answer
    x = 122,081.55

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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.