Home / 143,005.24-197,346.69-78,475.56

Finding the Fourth Proportional to 143,005.24, 197,346.69 and 78,475.56

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Solution

The fourth proportional to 143,005.24, 197,346.69 and 78,475.56 is: 108,295.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,005.24 : 197,346.69 = 78,475.56 : x
  2. Step 2: Convert to fraction form
    143,005.24/197,346.69 = 78,475.56/x
  3. Step 3: Cross multiply
    143,005.24x = 197,346.69 × 78,475.56
  4. Step 4: Simplify right side
    143,005.24x = 15,486,892,011.90
  5. Step 5: Solve for x
    x = 15,486,892,011.90/143,005.24
  6. Step 6: Final answer
    x = 108,295.98

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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.