Home / 386,076.20-579,143.10-136,725.80

Finding the Fourth Proportional to 386,076.20, 579,143.10 and 136,725.80

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Solution

The fourth proportional to 386,076.20, 579,143.10 and 136,725.80 is: 205,098.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,076.20 : 579,143.10 = 136,725.80 : x
  2. Step 2: Convert to fraction form
    386,076.20/579,143.10 = 136,725.80/x
  3. Step 3: Cross multiply
    386,076.20x = 579,143.10 × 136,725.80
  4. Step 4: Simplify right side
    386,076.20x = 79,183,803,661.98
  5. Step 5: Solve for x
    x = 79,183,803,661.98/386,076.20
  6. Step 6: Final answer
    x = 205,098.90

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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.