Home / 149,199.76-205,905-82,131.76

Finding the Fourth Proportional to 149,199.76, 205,905 and 82,131.76

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Solution

The fourth proportional to 149,199.76, 205,905 and 82,131.76 is: 113,346.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,199.76 : 205,905 = 82,131.76 : x
  2. Step 2: Convert to fraction form
    149,199.76/205,905 = 82,131.76/x
  3. Step 3: Cross multiply
    149,199.76x = 205,905 × 82,131.76
  4. Step 4: Simplify right side
    149,199.76x = 16,911,340,042.80
  5. Step 5: Solve for x
    x = 16,911,340,042.80/149,199.76
  6. Step 6: Final answer
    x = 113,346.97

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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.