Home / 139,477.35-192,479.03-75,815

Finding the Fourth Proportional to 139,477.35, 192,479.03 and 75,815

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Solution

The fourth proportional to 139,477.35, 192,479.03 and 75,815 is: 104,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,477.35 : 192,479.03 = 75,815 : x
  2. Step 2: Convert to fraction form
    139,477.35/192,479.03 = 75,815/x
  3. Step 3: Cross multiply
    139,477.35x = 192,479.03 × 75,815
  4. Step 4: Simplify right side
    139,477.35x = 14,592,797,659.45
  5. Step 5: Solve for x
    x = 14,592,797,659.45/139,477.35
  6. Step 6: Final answer
    x = 104,624.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.