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Finding the Fourth Proportional to 172,118.04, 258,138.12 and 65,463.96

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Solution

The fourth proportional to 172,118.04, 258,138.12 and 65,463.96 is: 98,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,118.04 : 258,138.12 = 65,463.96 : x
  2. Step 2: Convert to fraction form
    172,118.04/258,138.12 = 65,463.96/x
  3. Step 3: Cross multiply
    172,118.04x = 258,138.12 × 65,463.96
  4. Step 4: Simplify right side
    172,118.04x = 16,898,743,562.16
  5. Step 5: Solve for x
    x = 16,898,743,562.16/172,118.04
  6. Step 6: Final answer
    x = 98,181.13

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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.