Home / 128,176.26-192,264.86-39,429.15

Finding the Fourth Proportional to 128,176.26, 192,264.86 and 39,429.15

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Solution

The fourth proportional to 128,176.26, 192,264.86 and 39,429.15 is: 59,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,176.26 : 192,264.86 = 39,429.15 : x
  2. Step 2: Convert to fraction form
    128,176.26/192,264.86 = 39,429.15/x
  3. Step 3: Cross multiply
    128,176.26x = 192,264.86 × 39,429.15
  4. Step 4: Simplify right side
    128,176.26x = 7,580,840,103.24
  5. Step 5: Solve for x
    x = 7,580,840,103.24/128,176.26
  6. Step 6: Final answer
    x = 59,143.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.