Home / 143,102.40-197,471.44-79,435.20

Finding the Fourth Proportional to 143,102.40, 197,471.44 and 79,435.20

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Solution

The fourth proportional to 143,102.40, 197,471.44 and 79,435.20 is: 109,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,102.40 : 197,471.44 = 79,435.20 : x
  2. Step 2: Convert to fraction form
    143,102.40/197,471.44 = 79,435.20/x
  3. Step 3: Cross multiply
    143,102.40x = 197,471.44 × 79,435.20
  4. Step 4: Simplify right side
    143,102.40x = 15,686,183,330.69
  5. Step 5: Solve for x
    x = 15,686,183,330.69/143,102.40
  6. Step 6: Final answer
    x = 109,615.10

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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.