Home / 143,057.36-197,409.96-79,395.20

Finding the Fourth Proportional to 143,057.36, 197,409.96 and 79,395.20

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Solution

The fourth proportional to 143,057.36, 197,409.96 and 79,395.20 is: 109,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,057.36 : 197,409.96 = 79,395.20 : x
  2. Step 2: Convert to fraction form
    143,057.36/197,409.96 = 79,395.20/x
  3. Step 3: Cross multiply
    143,057.36x = 197,409.96 × 79,395.20
  4. Step 4: Simplify right side
    143,057.36x = 15,673,403,256.19
  5. Step 5: Solve for x
    x = 15,673,403,256.19/143,057.36
  6. Step 6: Final answer
    x = 109,560.27

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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.