Home / 142,299.23-196,380.50-81,879.05

Finding the Fourth Proportional to 142,299.23, 196,380.50 and 81,879.05

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Solution

The fourth proportional to 142,299.23, 196,380.50 and 81,879.05 is: 112,997.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,299.23 : 196,380.50 = 81,879.05 : x
  2. Step 2: Convert to fraction form
    142,299.23/196,380.50 = 81,879.05/x
  3. Step 3: Cross multiply
    142,299.23x = 196,380.50 × 81,879.05
  4. Step 4: Simplify right side
    142,299.23x = 16,079,448,778.53
  5. Step 5: Solve for x
    x = 16,079,448,778.53/142,299.23
  6. Step 6: Final answer
    x = 112,997.44

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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.