Home / 143,018.24-197,364.53-79,355.88

Finding the Fourth Proportional to 143,018.24, 197,364.53 and 79,355.88

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Solution

The fourth proportional to 143,018.24, 197,364.53 and 79,355.88 is: 109,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,018.24 : 197,364.53 = 79,355.88 : x
  2. Step 2: Convert to fraction form
    143,018.24/197,364.53 = 79,355.88/x
  3. Step 3: Cross multiply
    143,018.24x = 197,364.53 × 79,355.88
  4. Step 4: Simplify right side
    143,018.24x = 15,662,036,157.33
  5. Step 5: Solve for x
    x = 15,662,036,157.33/143,018.24
  6. Step 6: Final answer
    x = 109,510.76

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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.