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Finding the Fourth Proportional to 101,225.82, 139,691.63 and 58,787.09

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Solution

The fourth proportional to 101,225.82, 139,691.63 and 58,787.09 is: 81,126.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,225.82 : 139,691.63 = 58,787.09 : x
  2. Step 2: Convert to fraction form
    101,225.82/139,691.63 = 58,787.09/x
  3. Step 3: Cross multiply
    101,225.82x = 139,691.63 × 58,787.09
  4. Step 4: Simplify right side
    101,225.82x = 8,212,063,653.11
  5. Step 5: Solve for x
    x = 8,212,063,653.11/101,225.82
  6. Step 6: Final answer
    x = 81,126.18

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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.