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Finding the Fourth Proportional to 168,814.40, 253,221.60 and 105,828.80

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Solution

The fourth proportional to 168,814.40, 253,221.60 and 105,828.80 is: 158,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,814.40 : 253,221.60 = 105,828.80 : x
  2. Step 2: Convert to fraction form
    168,814.40/253,221.60 = 105,828.80/x
  3. Step 3: Cross multiply
    168,814.40x = 253,221.60 × 105,828.80
  4. Step 4: Simplify right side
    168,814.40x = 26,798,138,062.08
  5. Step 5: Solve for x
    x = 26,798,138,062.08/168,814.40
  6. Step 6: Final answer
    x = 158,743.20

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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.