Home / 112,155.83-154,735.96-71,891.79

Finding the Fourth Proportional to 112,155.83, 154,735.96 and 71,891.79

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Solution

The fourth proportional to 112,155.83, 154,735.96 and 71,891.79 is: 99,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,155.83 : 154,735.96 = 71,891.79 : x
  2. Step 2: Convert to fraction form
    112,155.83/154,735.96 = 71,891.79/x
  3. Step 3: Cross multiply
    112,155.83x = 154,735.96 × 71,891.79
  4. Step 4: Simplify right side
    112,155.83x = 11,124,245,141.77
  5. Step 5: Solve for x
    x = 11,124,245,141.77/112,155.83
  6. Step 6: Final answer
    x = 99,185.62

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1.5x scale

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.