Home / 128,076.84-192,120.75-39,333.87

Finding the Fourth Proportional to 128,076.84, 192,120.75 and 39,333.87

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Solution

The fourth proportional to 128,076.84, 192,120.75 and 39,333.87 is: 59,002.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,076.84 : 192,120.75 = 39,333.87 : x
  2. Step 2: Convert to fraction form
    128,076.84/192,120.75 = 39,333.87/x
  3. Step 3: Cross multiply
    128,076.84x = 192,120.75 × 39,333.87
  4. Step 4: Simplify right side
    128,076.84x = 7,556,852,604.80
  5. Step 5: Solve for x
    x = 7,556,852,604.80/128,076.84
  6. Step 6: Final answer
    x = 59,002.49

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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.