Home / 129,647.24-178,924.92-75,950.72

Finding the Fourth Proportional to 129,647.24, 178,924.92 and 75,950.72

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Solution

The fourth proportional to 129,647.24, 178,924.92 and 75,950.72 is: 104,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,647.24 : 178,924.92 = 75,950.72 : x
  2. Step 2: Convert to fraction form
    129,647.24/178,924.92 = 75,950.72/x
  3. Step 3: Cross multiply
    129,647.24x = 178,924.92 × 75,950.72
  4. Step 4: Simplify right side
    129,647.24x = 13,589,476,499.94
  5. Step 5: Solve for x
    x = 13,589,476,499.94/129,647.24
  6. Step 6: Final answer
    x = 104,818.86

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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.