Home / 129,682.50-178,958.26-72,323.56

Finding the Fourth Proportional to 129,682.50, 178,958.26 and 72,323.56

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Solution

The fourth proportional to 129,682.50, 178,958.26 and 72,323.56 is: 99,804.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,682.50 : 178,958.26 = 72,323.56 : x
  2. Step 2: Convert to fraction form
    129,682.50/178,958.26 = 72,323.56/x
  3. Step 3: Cross multiply
    129,682.50x = 178,958.26 × 72,323.56
  4. Step 4: Simplify right side
    129,682.50x = 12,942,898,454.61
  5. Step 5: Solve for x
    x = 12,942,898,454.61/129,682.50
  6. Step 6: Final answer
    x = 99,804.51

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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.