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Finding the Fourth Proportional to 172,101.04, 258,112.62 and 65,446.96

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Solution

The fourth proportional to 172,101.04, 258,112.62 and 65,446.96 is: 98,155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,101.04 : 258,112.62 = 65,446.96 : x
  2. Step 2: Convert to fraction form
    172,101.04/258,112.62 = 65,446.96/x
  3. Step 3: Cross multiply
    172,101.04x = 258,112.62 × 65,446.96
  4. Step 4: Simplify right side
    172,101.04x = 16,892,686,316.64
  5. Step 5: Solve for x
    x = 16,892,686,316.64/172,101.04
  6. Step 6: Final answer
    x = 98,155.63

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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.