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Finding the Fourth Proportional to 168,702.30, 252,980.55 and 84,429.90

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Solution

The fourth proportional to 168,702.30, 252,980.55 and 84,429.90 is: 126,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,702.30 : 252,980.55 = 84,429.90 : x
  2. Step 2: Convert to fraction form
    168,702.30/252,980.55 = 84,429.90/x
  3. Step 3: Cross multiply
    168,702.30x = 252,980.55 × 84,429.90
  4. Step 4: Simplify right side
    168,702.30x = 21,359,122,538.45
  5. Step 5: Solve for x
    x = 21,359,122,538.45/168,702.30
  6. Step 6: Final answer
    x = 126,608.37

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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.