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Finding the Fourth Proportional to 108,536.58, 162,608 and 80,143.82

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Solution

The fourth proportional to 108,536.58, 162,608 and 80,143.82 is: 120,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,536.58 : 162,608 = 80,143.82 : x
  2. Step 2: Convert to fraction form
    108,536.58/162,608 = 80,143.82/x
  3. Step 3: Cross multiply
    108,536.58x = 162,608 × 80,143.82
  4. Step 4: Simplify right side
    108,536.58x = 13,032,026,282.56
  5. Step 5: Solve for x
    x = 13,032,026,282.56/108,536.58
  6. Step 6: Final answer
    x = 120,070.36

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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.