Home / 139,520.82-192,537.75-75,858.66

Finding the Fourth Proportional to 139,520.82, 192,537.75 and 75,858.66

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Solution

The fourth proportional to 139,520.82, 192,537.75 and 75,858.66 is: 104,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,520.82 : 192,537.75 = 75,858.66 : x
  2. Step 2: Convert to fraction form
    139,520.82/192,537.75 = 75,858.66/x
  3. Step 3: Cross multiply
    139,520.82x = 192,537.75 × 75,858.66
  4. Step 4: Simplify right side
    139,520.82x = 14,605,655,714.42
  5. Step 5: Solve for x
    x = 14,605,655,714.42/139,520.82
  6. Step 6: Final answer
    x = 104,684.42

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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.