Home / 140,142.85-193,401.66-79,711.94

Finding the Fourth Proportional to 140,142.85, 193,401.66 and 79,711.94

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Solution

The fourth proportional to 140,142.85, 193,401.66 and 79,711.94 is: 110,005.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,142.85 : 193,401.66 = 79,711.94 : x
  2. Step 2: Convert to fraction form
    140,142.85/193,401.66 = 79,711.94/x
  3. Step 3: Cross multiply
    140,142.85x = 193,401.66 × 79,711.94
  4. Step 4: Simplify right side
    140,142.85x = 15,416,421,517.82
  5. Step 5: Solve for x
    x = 15,416,421,517.82/140,142.85
  6. Step 6: Final answer
    x = 110,005.05

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1.5x scale

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.