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Finding the Fourth Proportional to 168,145.92, 252,244.80 and 57,312

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Solution

The fourth proportional to 168,145.92, 252,244.80 and 57,312 is: 85,976.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,145.92 : 252,244.80 = 57,312 : x
  2. Step 2: Convert to fraction form
    168,145.92/252,244.80 = 57,312/x
  3. Step 3: Cross multiply
    168,145.92x = 252,244.80 × 57,312
  4. Step 4: Simplify right side
    168,145.92x = 14,456,653,977.60
  5. Step 5: Solve for x
    x = 14,456,653,977.60/168,145.92
  6. Step 6: Final answer
    x = 85,976.83

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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.