Home / 140,110.30-193,356.48-79,689.64

Finding the Fourth Proportional to 140,110.30, 193,356.48 and 79,689.64

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Solution

The fourth proportional to 140,110.30, 193,356.48 and 79,689.64 is: 109,974.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,110.30 : 193,356.48 = 79,689.64 : x
  2. Step 2: Convert to fraction form
    140,110.30/193,356.48 = 79,689.64/x
  3. Step 3: Cross multiply
    140,110.30x = 193,356.48 × 79,689.64
  4. Step 4: Simplify right side
    140,110.30x = 15,408,508,282.87
  5. Step 5: Solve for x
    x = 15,408,508,282.87/140,110.30
  6. Step 6: Final answer
    x = 109,974.13

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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.