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Finding the Fourth Proportional to 168,129.36, 252,234 and 48,187.80

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Solution

The fourth proportional to 168,129.36, 252,234 and 48,187.80 is: 72,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,129.36 : 252,234 = 48,187.80 : x
  2. Step 2: Convert to fraction form
    168,129.36/252,234 = 48,187.80/x
  3. Step 3: Cross multiply
    168,129.36x = 252,234 × 48,187.80
  4. Step 4: Simplify right side
    168,129.36x = 12,154,601,545.20
  5. Step 5: Solve for x
    x = 12,154,601,545.20/168,129.36
  6. Step 6: Final answer
    x = 72,293.15

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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.