Home / 112,160.12-154,797.75-71,919.32

Finding the Fourth Proportional to 112,160.12, 154,797.75 and 71,919.32

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Solution

The fourth proportional to 112,160.12, 154,797.75 and 71,919.32 is: 99,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,160.12 : 154,797.75 = 71,919.32 : x
  2. Step 2: Convert to fraction form
    112,160.12/154,797.75 = 71,919.32/x
  3. Step 3: Cross multiply
    112,160.12x = 154,797.75 × 71,919.32
  4. Step 4: Simplify right side
    112,160.12x = 11,132,948,143.54
  5. Step 5: Solve for x
    x = 11,132,948,143.54/112,160.12
  6. Step 6: Final answer
    x = 99,259.42

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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.