Home / 140,134.20-193,379.24-79,696.40

Finding the Fourth Proportional to 140,134.20, 193,379.24 and 79,696.40

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Solution

The fourth proportional to 140,134.20, 193,379.24 and 79,696.40 is: 109,977.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,134.20 : 193,379.24 = 79,696.40 : x
  2. Step 2: Convert to fraction form
    140,134.20/193,379.24 = 79,696.40/x
  3. Step 3: Cross multiply
    140,134.20x = 193,379.24 × 79,696.40
  4. Step 4: Simplify right side
    140,134.20x = 15,411,629,262.74
  5. Step 5: Solve for x
    x = 15,411,629,262.74/140,134.20
  6. Step 6: Final answer
    x = 109,977.64

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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.