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Finding the Fourth Proportional to 143,115.80, 197,363.80 and 104,318.36

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Solution

The fourth proportional to 143,115.80, 197,363.80 and 104,318.36 is: 143,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,115.80 : 197,363.80 = 104,318.36 : x
  2. Step 2: Convert to fraction form
    143,115.80/197,363.80 = 104,318.36/x
  3. Step 3: Cross multiply
    143,115.80x = 197,363.80 × 104,318.36
  4. Step 4: Simplify right side
    143,115.80x = 20,588,667,939.37
  5. Step 5: Solve for x
    x = 20,588,667,939.37/143,115.80
  6. Step 6: Final answer
    x = 143,860.20

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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.