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Finding the Fourth Proportional to 172,347.68, 258,592.76 and 76,234.36

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Solution

The fourth proportional to 172,347.68, 258,592.76 and 76,234.36 is: 114,383.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,347.68 : 258,592.76 = 76,234.36 : x
  2. Step 2: Convert to fraction form
    172,347.68/258,592.76 = 76,234.36/x
  3. Step 3: Cross multiply
    172,347.68x = 258,592.76 × 76,234.36
  4. Step 4: Simplify right side
    172,347.68x = 19,713,653,559.23
  5. Step 5: Solve for x
    x = 19,713,653,559.23/172,347.68
  6. Step 6: Final answer
    x = 114,383.05

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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.