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Finding the Fourth Proportional to 168,405.40, 252,024.90 and 115,917.40

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Solution

The fourth proportional to 168,405.40, 252,024.90 and 115,917.40 is: 173,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,405.40 : 252,024.90 = 115,917.40 : x
  2. Step 2: Convert to fraction form
    168,405.40/252,024.90 = 115,917.40/x
  3. Step 3: Cross multiply
    168,405.40x = 252,024.90 × 115,917.40
  4. Step 4: Simplify right side
    168,405.40x = 29,214,071,143.26
  5. Step 5: Solve for x
    x = 29,214,071,143.26/168,405.40
  6. Step 6: Final answer
    x = 173,474.67

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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.