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Finding the Fourth Proportional to 120,368.48, 166,108.08 and 67,376.48

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Solution

The fourth proportional to 120,368.48, 166,108.08 and 67,376.48 is: 92,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,368.48 : 166,108.08 = 67,376.48 : x
  2. Step 2: Convert to fraction form
    120,368.48/166,108.08 = 67,376.48/x
  3. Step 3: Cross multiply
    120,368.48x = 166,108.08 × 67,376.48
  4. Step 4: Simplify right side
    120,368.48x = 11,191,777,729.96
  5. Step 5: Solve for x
    x = 11,191,777,729.96/120,368.48
  6. Step 6: Final answer
    x = 92,979.31

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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.