Home / 112,198.68-154,849.20-71,366.78

Finding the Fourth Proportional to 112,198.68, 154,849.20 and 71,366.78

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Solution

The fourth proportional to 112,198.68, 154,849.20 and 71,366.78 is: 98,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,198.68 : 154,849.20 = 71,366.78 : x
  2. Step 2: Convert to fraction form
    112,198.68/154,849.20 = 71,366.78/x
  3. Step 3: Cross multiply
    112,198.68x = 154,849.20 × 71,366.78
  4. Step 4: Simplify right side
    112,198.68x = 11,051,088,909.07
  5. Step 5: Solve for x
    x = 11,051,088,909.07/112,198.68
  6. Step 6: Final answer
    x = 98,495.71

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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.