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Finding the Fourth Proportional to 119,486.96, 164,872.71 and 68,490.31

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Solution

The fourth proportional to 119,486.96, 164,872.71 and 68,490.31 is: 94,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,486.96 : 164,872.71 = 68,490.31 : x
  2. Step 2: Convert to fraction form
    119,486.96/164,872.71 = 68,490.31/x
  3. Step 3: Cross multiply
    119,486.96x = 164,872.71 × 68,490.31
  4. Step 4: Simplify right side
    119,486.96x = 11,292,182,548.00
  5. Step 5: Solve for x
    x = 11,292,182,548.00/119,486.96
  6. Step 6: Final answer
    x = 94,505.56

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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.