Home / 205,170.95-307,790.45-72,016.67

Finding the Fourth Proportional to 205,170.95, 307,790.45 and 72,016.67

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Solution

The fourth proportional to 205,170.95, 307,790.45 and 72,016.67 is: 108,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,170.95 : 307,790.45 = 72,016.67 : x
  2. Step 2: Convert to fraction form
    205,170.95/307,790.45 = 72,016.67/x
  3. Step 3: Cross multiply
    205,170.95x = 307,790.45 × 72,016.67
  4. Step 4: Simplify right side
    205,170.95x = 22,166,043,266.80
  5. Step 5: Solve for x
    x = 22,166,043,266.80/205,170.95
  6. Step 6: Final answer
    x = 108,036.95

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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.