Home / 143,361.28-197,827.36-79,695.20

Finding the Fourth Proportional to 143,361.28, 197,827.36 and 79,695.20

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Solution

The fourth proportional to 143,361.28, 197,827.36 and 79,695.20 is: 109,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,361.28 : 197,827.36 = 79,695.20 : x
  2. Step 2: Convert to fraction form
    143,361.28/197,827.36 = 79,695.20/x
  3. Step 3: Cross multiply
    143,361.28x = 197,827.36 × 79,695.20
  4. Step 4: Simplify right side
    143,361.28x = 15,765,891,020.67
  5. Step 5: Solve for x
    x = 15,765,891,020.67/143,361.28
  6. Step 6: Final answer
    x = 109,973.15

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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.