Home / 139,647.27-192,714.09-75,985.47

Finding the Fourth Proportional to 139,647.27, 192,714.09 and 75,985.47

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Solution

The fourth proportional to 139,647.27, 192,714.09 and 75,985.47 is: 104,860.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,647.27 : 192,714.09 = 75,985.47 : x
  2. Step 2: Convert to fraction form
    139,647.27/192,714.09 = 75,985.47/x
  3. Step 3: Cross multiply
    139,647.27x = 192,714.09 × 75,985.47
  4. Step 4: Simplify right side
    139,647.27x = 14,643,470,704.27
  5. Step 5: Solve for x
    x = 14,643,470,704.27/139,647.27
  6. Step 6: Final answer
    x = 104,860.42

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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.