Home / 149,864.22-206,810.21-81,879.74

Finding the Fourth Proportional to 149,864.22, 206,810.21 and 81,879.74

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Solution

The fourth proportional to 149,864.22, 206,810.21 and 81,879.74 is: 112,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,864.22 : 206,810.21 = 81,879.74 : x
  2. Step 2: Convert to fraction form
    149,864.22/206,810.21 = 81,879.74/x
  3. Step 3: Cross multiply
    149,864.22x = 206,810.21 × 81,879.74
  4. Step 4: Simplify right side
    149,864.22x = 16,933,566,045.39
  5. Step 5: Solve for x
    x = 16,933,566,045.39/149,864.22
  6. Step 6: Final answer
    x = 112,992.72

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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.