Home / 143,045.73-197,403.87-79,383.58

Finding the Fourth Proportional to 143,045.73, 197,403.87 and 79,383.58

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Solution

The fourth proportional to 143,045.73, 197,403.87 and 79,383.58 is: 109,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,045.73 : 197,403.87 = 79,383.58 : x
  2. Step 2: Convert to fraction form
    143,045.73/197,403.87 = 79,383.58/x
  3. Step 3: Cross multiply
    143,045.73x = 197,403.87 × 79,383.58
  4. Step 4: Simplify right side
    143,045.73x = 15,670,624,919.44
  5. Step 5: Solve for x
    x = 15,670,624,919.44/143,045.73
  6. Step 6: Final answer
    x = 109,549.76

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1.5x scale

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.