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Finding the Fourth Proportional to 168,504, 252,950.40 and 85,572.96

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Solution

The fourth proportional to 168,504, 252,950.40 and 85,572.96 is: 128,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,504 : 252,950.40 = 85,572.96 : x
  2. Step 2: Convert to fraction form
    168,504/252,950.40 = 85,572.96/x
  3. Step 3: Cross multiply
    168,504x = 252,950.40 × 85,572.96
  4. Step 4: Simplify right side
    168,504x = 21,645,714,461.18
  5. Step 5: Solve for x
    x = 21,645,714,461.18/168,504
  6. Step 6: Final answer
    x = 128,458.16

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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.