Home / 143,139.15-197,513.44-79,464.65

Finding the Fourth Proportional to 143,139.15, 197,513.44 and 79,464.65

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Solution

The fourth proportional to 143,139.15, 197,513.44 and 79,464.65 is: 109,650.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,139.15 : 197,513.44 = 79,464.65 : x
  2. Step 2: Convert to fraction form
    143,139.15/197,513.44 = 79,464.65/x
  3. Step 3: Cross multiply
    143,139.15x = 197,513.44 × 79,464.65
  4. Step 4: Simplify right side
    143,139.15x = 15,695,335,193.67
  5. Step 5: Solve for x
    x = 15,695,335,193.67/143,139.15
  6. Step 6: Final answer
    x = 109,650.89

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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.