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Finding the Fourth Proportional to 168,109.20, 251,942.40 and 123,526.80

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Solution

The fourth proportional to 168,109.20, 251,942.40 and 123,526.80 is: 185,127.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,109.20 : 251,942.40 = 123,526.80 : x
  2. Step 2: Convert to fraction form
    168,109.20/251,942.40 = 123,526.80/x
  3. Step 3: Cross multiply
    168,109.20x = 251,942.40 × 123,526.80
  4. Step 4: Simplify right side
    168,109.20x = 31,121,638,456.32
  5. Step 5: Solve for x
    x = 31,121,638,456.32/168,109.20
  6. Step 6: Final answer
    x = 185,127.52

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1.5x scale

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.