Home / 139,645.22-192,710.16-75,982.68

Finding the Fourth Proportional to 139,645.22, 192,710.16 and 75,982.68

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Solution

The fourth proportional to 139,645.22, 192,710.16 and 75,982.68 is: 104,855.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,645.22 : 192,710.16 = 75,982.68 : x
  2. Step 2: Convert to fraction form
    139,645.22/192,710.16 = 75,982.68/x
  3. Step 3: Cross multiply
    139,645.22x = 192,710.16 × 75,982.68
  4. Step 4: Simplify right side
    139,645.22x = 14,642,634,420.03
  5. Step 5: Solve for x
    x = 14,642,634,420.03/139,645.22
  6. Step 6: Final answer
    x = 104,855.97

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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.