Home / 79,790.76-120,245.49-71,902.17

Finding the Fourth Proportional to 79,790.76, 120,245.49 and 71,902.17

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Solution

The fourth proportional to 79,790.76, 120,245.49 and 71,902.17 is: 108,357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,790.76 : 120,245.49 = 71,902.17 : x
  2. Step 2: Convert to fraction form
    79,790.76/120,245.49 = 71,902.17/x
  3. Step 3: Cross multiply
    79,790.76x = 120,245.49 × 71,902.17
  4. Step 4: Simplify right side
    79,790.76x = 8,645,911,663.71
  5. Step 5: Solve for x
    x = 8,645,911,663.71/79,790.76
  6. Step 6: Final answer
    x = 108,357.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.