Home / 143,129.64-197,527.92-79,468.56

Finding the Fourth Proportional to 143,129.64, 197,527.92 and 79,468.56

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Solution

The fourth proportional to 143,129.64, 197,527.92 and 79,468.56 is: 109,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,129.64 : 197,527.92 = 79,468.56 : x
  2. Step 2: Convert to fraction form
    143,129.64/197,527.92 = 79,468.56/x
  3. Step 3: Cross multiply
    143,129.64x = 197,527.92 × 79,468.56
  4. Step 4: Simplify right side
    143,129.64x = 15,697,259,362.20
  5. Step 5: Solve for x
    x = 15,697,259,362.20/143,129.64
  6. Step 6: Final answer
    x = 109,671.62

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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.