Home / 143,398.36-197,890.50-79,736.68

Finding the Fourth Proportional to 143,398.36, 197,890.50 and 79,736.68

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Solution

The fourth proportional to 143,398.36, 197,890.50 and 79,736.68 is: 110,037.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,398.36 : 197,890.50 = 79,736.68 : x
  2. Step 2: Convert to fraction form
    143,398.36/197,890.50 = 79,736.68/x
  3. Step 3: Cross multiply
    143,398.36x = 197,890.50 × 79,736.68
  4. Step 4: Simplify right side
    143,398.36x = 15,779,131,473.54
  5. Step 5: Solve for x
    x = 15,779,131,473.54/143,398.36
  6. Step 6: Final answer
    x = 110,037.04

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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.