Home / 140,405.30-193,736.91-79,977.12

Finding the Fourth Proportional to 140,405.30, 193,736.91 and 79,977.12

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Solution

The fourth proportional to 140,405.30, 193,736.91 and 79,977.12 is: 110,355.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,405.30 : 193,736.91 = 79,977.12 : x
  2. Step 2: Convert to fraction form
    140,405.30/193,736.91 = 79,977.12/x
  3. Step 3: Cross multiply
    140,405.30x = 193,736.91 × 79,977.12
  4. Step 4: Simplify right side
    140,405.30x = 15,494,520,762.67
  5. Step 5: Solve for x
    x = 15,494,520,762.67/140,405.30
  6. Step 6: Final answer
    x = 110,355.67

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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.