Home / 143,023.86-197,372.30-79,361.51

Finding the Fourth Proportional to 143,023.86, 197,372.30 and 79,361.51

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Solution

The fourth proportional to 143,023.86, 197,372.30 and 79,361.51 is: 109,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,023.86 : 197,372.30 = 79,361.51 : x
  2. Step 2: Convert to fraction form
    143,023.86/197,372.30 = 79,361.51/x
  3. Step 3: Cross multiply
    143,023.86x = 197,372.30 × 79,361.51
  4. Step 4: Simplify right side
    143,023.86x = 15,663,762,376.50
  5. Step 5: Solve for x
    x = 15,663,762,376.50/143,023.86
  6. Step 6: Final answer
    x = 109,518.53

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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.