Home / 143,354.13-197,840.67-79,697.85

Finding the Fourth Proportional to 143,354.13, 197,840.67 and 79,697.85

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Solution

The fourth proportional to 143,354.13, 197,840.67 and 79,697.85 is: 109,989.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,354.13 : 197,840.67 = 79,697.85 : x
  2. Step 2: Convert to fraction form
    143,354.13/197,840.67 = 79,697.85/x
  3. Step 3: Cross multiply
    143,354.13x = 197,840.67 × 79,697.85
  4. Step 4: Simplify right side
    143,354.13x = 15,767,476,041.56
  5. Step 5: Solve for x
    x = 15,767,476,041.56/143,354.13
  6. Step 6: Final answer
    x = 109,989.69

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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.