Home / 129,315.92-178,429.22-75,590.54

Finding the Fourth Proportional to 129,315.92, 178,429.22 and 75,590.54

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Solution

The fourth proportional to 129,315.92, 178,429.22 and 75,590.54 is: 104,299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,315.92 : 178,429.22 = 75,590.54 : x
  2. Step 2: Convert to fraction form
    129,315.92/178,429.22 = 75,590.54/x
  3. Step 3: Cross multiply
    129,315.92x = 178,429.22 × 75,590.54
  4. Step 4: Simplify right side
    129,315.92x = 13,487,561,091.58
  5. Step 5: Solve for x
    x = 13,487,561,091.58/129,315.92
  6. Step 6: Final answer
    x = 104,299.31

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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.