Home / 143,107.35-197,489.03-78,579.38

Finding the Fourth Proportional to 143,107.35, 197,489.03 and 78,579.38

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Solution

The fourth proportional to 143,107.35, 197,489.03 and 78,579.38 is: 108,440.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,107.35 : 197,489.03 = 78,579.38 : x
  2. Step 2: Convert to fraction form
    143,107.35/197,489.03 = 78,579.38/x
  3. Step 3: Cross multiply
    143,107.35x = 197,489.03 × 78,579.38
  4. Step 4: Simplify right side
    143,107.35x = 15,518,564,153.86
  5. Step 5: Solve for x
    x = 15,518,564,153.86/143,107.35
  6. Step 6: Final answer
    x = 108,440.02

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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.