Home / 143,057.28-197,416.32-79,395.84

Finding the Fourth Proportional to 143,057.28, 197,416.32 and 79,395.84

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Solution

The fourth proportional to 143,057.28, 197,416.32 and 79,395.84 is: 109,564.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,057.28 : 197,416.32 = 79,395.84 : x
  2. Step 2: Convert to fraction form
    143,057.28/197,416.32 = 79,395.84/x
  3. Step 3: Cross multiply
    143,057.28x = 197,416.32 × 79,395.84
  4. Step 4: Simplify right side
    143,057.28x = 15,674,034,556.11
  5. Step 5: Solve for x
    x = 15,674,034,556.11/143,057.28
  6. Step 6: Final answer
    x = 109,564.75

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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.