Home / 109,879.42-164,648.62-76,211.17

Finding the Fourth Proportional to 109,879.42, 164,648.62 and 76,211.17

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Solution

The fourth proportional to 109,879.42, 164,648.62 and 76,211.17 is: 114,198.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,879.42 : 164,648.62 = 76,211.17 : x
  2. Step 2: Convert to fraction form
    109,879.42/164,648.62 = 76,211.17/x
  3. Step 3: Cross multiply
    109,879.42x = 164,648.62 × 76,211.17
  4. Step 4: Simplify right side
    109,879.42x = 12,548,063,969.09
  5. Step 5: Solve for x
    x = 12,548,063,969.09/109,879.42
  6. Step 6: Final answer
    x = 114,198.49

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1.5x scale

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.