Home / 143,402.13-197,892.45-79,738.56

Finding the Fourth Proportional to 143,402.13, 197,892.45 and 79,738.56

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Solution

The fourth proportional to 143,402.13, 197,892.45 and 79,738.56 is: 110,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,402.13 : 197,892.45 = 79,738.56 : x
  2. Step 2: Convert to fraction form
    143,402.13/197,892.45 = 79,738.56/x
  3. Step 3: Cross multiply
    143,402.13x = 197,892.45 × 79,738.56
  4. Step 4: Simplify right side
    143,402.13x = 15,779,658,997.87
  5. Step 5: Solve for x
    x = 15,779,658,997.87/143,402.13
  6. Step 6: Final answer
    x = 110,037.83

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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.