Home / 168,691.51-253,308.34-111,853.20

Finding the Fourth Proportional to 168,691.51, 253,308.34 and 111,853.20

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Solution

The fourth proportional to 168,691.51, 253,308.34 and 111,853.20 is: 167,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,691.51 : 253,308.34 = 111,853.20 : x
  2. Step 2: Convert to fraction form
    168,691.51/253,308.34 = 111,853.20/x
  3. Step 3: Cross multiply
    168,691.51x = 253,308.34 × 111,853.20
  4. Step 4: Simplify right side
    168,691.51x = 28,333,348,415.69
  5. Step 5: Solve for x
    x = 28,333,348,415.69/168,691.51
  6. Step 6: Final answer
    x = 167,959.54

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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.