Home / 104,979.15-157,410.90-71,736.75

Finding the Fourth Proportional to 104,979.15, 157,410.90 and 71,736.75

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Solution

The fourth proportional to 104,979.15, 157,410.90 and 71,736.75 is: 107,565.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,979.15 : 157,410.90 = 71,736.75 : x
  2. Step 2: Convert to fraction form
    104,979.15/157,410.90 = 71,736.75/x
  3. Step 3: Cross multiply
    104,979.15x = 157,410.90 × 71,736.75
  4. Step 4: Simplify right side
    104,979.15x = 11,292,146,380.58
  5. Step 5: Solve for x
    x = 11,292,146,380.58/104,979.15
  6. Step 6: Final answer
    x = 107,565.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.