Home / 128,329.50-192,429.99-39,571.47

Finding the Fourth Proportional to 128,329.50, 192,429.99 and 39,571.47

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Solution

The fourth proportional to 128,329.50, 192,429.99 and 39,571.47 is: 59,337.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,329.50 : 192,429.99 = 39,571.47 : x
  2. Step 2: Convert to fraction form
    128,329.50/192,429.99 = 39,571.47/x
  3. Step 3: Cross multiply
    128,329.50x = 192,429.99 × 39,571.47
  4. Step 4: Simplify right side
    128,329.50x = 7,614,737,576.39
  5. Step 5: Solve for x
    x = 7,614,737,576.39/128,329.50
  6. Step 6: Final answer
    x = 59,337.39

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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.