Home / 143,215.72-197,644.26-79,551.40

Finding the Fourth Proportional to 143,215.72, 197,644.26 and 79,551.40

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Solution

The fourth proportional to 143,215.72, 197,644.26 and 79,551.40 is: 109,784.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,215.72 : 197,644.26 = 79,551.40 : x
  2. Step 2: Convert to fraction form
    143,215.72/197,644.26 = 79,551.40/x
  3. Step 3: Cross multiply
    143,215.72x = 197,644.26 × 79,551.40
  4. Step 4: Simplify right side
    143,215.72x = 15,722,877,584.96
  5. Step 5: Solve for x
    x = 15,722,877,584.96/143,215.72
  6. Step 6: Final answer
    x = 109,784.58

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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.