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Finding the Fourth Proportional to 119,122.31, 164,388.79 and 68,821.31

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Solution

The fourth proportional to 119,122.31, 164,388.79 and 68,821.31 is: 94,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,122.31 : 164,388.79 = 68,821.31 : x
  2. Step 2: Convert to fraction form
    119,122.31/164,388.79 = 68,821.31/x
  3. Step 3: Cross multiply
    119,122.31x = 164,388.79 × 68,821.31
  4. Step 4: Simplify right side
    119,122.31x = 11,313,452,374.11
  5. Step 5: Solve for x
    x = 11,313,452,374.11/119,122.31
  6. Step 6: Final answer
    x = 94,973.41

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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.