Home / 129,315.94-178,429.24-75,590.56

Finding the Fourth Proportional to 129,315.94, 178,429.24 and 75,590.56

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Solution

The fourth proportional to 129,315.94, 178,429.24 and 75,590.56 is: 104,299.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,315.94 : 178,429.24 = 75,590.56 : x
  2. Step 2: Convert to fraction form
    129,315.94/178,429.24 = 75,590.56/x
  3. Step 3: Cross multiply
    129,315.94x = 178,429.24 × 75,590.56
  4. Step 4: Simplify right side
    129,315.94x = 13,487,565,536.92
  5. Step 5: Solve for x
    x = 13,487,565,536.92/129,315.94
  6. Step 6: Final answer
    x = 104,299.33

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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.