Home / 143,432.72-197,921.96-79,760.24

Finding the Fourth Proportional to 143,432.72, 197,921.96 and 79,760.24

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Solution

The fourth proportional to 143,432.72, 197,921.96 and 79,760.24 is: 110,060.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,432.72 : 197,921.96 = 79,760.24 : x
  2. Step 2: Convert to fraction form
    143,432.72/197,921.96 = 79,760.24/x
  3. Step 3: Cross multiply
    143,432.72x = 197,921.96 × 79,760.24
  4. Step 4: Simplify right side
    143,432.72x = 15,786,303,030.87
  5. Step 5: Solve for x
    x = 15,786,303,030.87/143,432.72
  6. Step 6: Final answer
    x = 110,060.68

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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.