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Finding the Fourth Proportional to 101,602.91, 140,181.68 and 65,736.11

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Solution

The fourth proportional to 101,602.91, 140,181.68 and 65,736.11 is: 90,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,602.91 : 140,181.68 = 65,736.11 : x
  2. Step 2: Convert to fraction form
    101,602.91/140,181.68 = 65,736.11/x
  3. Step 3: Cross multiply
    101,602.91x = 140,181.68 × 65,736.11
  4. Step 4: Simplify right side
    101,602.91x = 9,214,997,306.88
  5. Step 5: Solve for x
    x = 9,214,997,306.88/101,602.91
  6. Step 6: Final answer
    x = 90,696.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.