Home / 139,514.21-192,525.58-79,090.43

Finding the Fourth Proportional to 139,514.21, 192,525.58 and 79,090.43

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Solution

The fourth proportional to 139,514.21, 192,525.58 and 79,090.43 is: 109,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,514.21 : 192,525.58 = 79,090.43 : x
  2. Step 2: Convert to fraction form
    139,514.21/192,525.58 = 79,090.43/x
  3. Step 3: Cross multiply
    139,514.21x = 192,525.58 × 79,090.43
  4. Step 4: Simplify right side
    139,514.21x = 15,226,931,191.79
  5. Step 5: Solve for x
    x = 15,226,931,191.79/139,514.21
  6. Step 6: Final answer
    x = 109,142.51

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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.