Home / 137,299.04-205,919.76-38,780

Finding the Fourth Proportional to 137,299.04, 205,919.76 and 38,780

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Solution

The fourth proportional to 137,299.04, 205,919.76 and 38,780 is: 58,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,299.04 : 205,919.76 = 38,780 : x
  2. Step 2: Convert to fraction form
    137,299.04/205,919.76 = 38,780/x
  3. Step 3: Cross multiply
    137,299.04x = 205,919.76 × 38,780
  4. Step 4: Simplify right side
    137,299.04x = 7,985,568,292.80
  5. Step 5: Solve for x
    x = 7,985,568,292.80/137,299.04
  6. Step 6: Final answer
    x = 58,161.87

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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.