Home / 120,456.68-166,410.17-79,161.32

Finding the Fourth Proportional to 120,456.68, 166,410.17 and 79,161.32

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Solution

The fourth proportional to 120,456.68, 166,410.17 and 79,161.32 is: 109,360.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,456.68 : 166,410.17 = 79,161.32 : x
  2. Step 2: Convert to fraction form
    120,456.68/166,410.17 = 79,161.32/x
  3. Step 3: Cross multiply
    120,456.68x = 166,410.17 × 79,161.32
  4. Step 4: Simplify right side
    120,456.68x = 13,173,247,490.77
  5. Step 5: Solve for x
    x = 13,173,247,490.77/120,456.68
  6. Step 6: Final answer
    x = 109,360.88

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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.