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Finding the Fourth Proportional to 172,099.64, 258,110.46 and 65,445.57

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Solution

The fourth proportional to 172,099.64, 258,110.46 and 65,445.57 is: 98,153.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,099.64 : 258,110.46 = 65,445.57 : x
  2. Step 2: Convert to fraction form
    172,099.64/258,110.46 = 65,445.57/x
  3. Step 3: Cross multiply
    172,099.64x = 258,110.46 × 65,445.57
  4. Step 4: Simplify right side
    172,099.64x = 16,892,186,177.66
  5. Step 5: Solve for x
    x = 16,892,186,177.66/172,099.64
  6. Step 6: Final answer
    x = 98,153.53

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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.