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Finding the Fourth Proportional to 143,133.68, 197,520.72 and 79,469.84

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Solution

The fourth proportional to 143,133.68, 197,520.72 and 79,469.84 is: 109,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,133.68 : 197,520.72 = 79,469.84 : x
  2. Step 2: Convert to fraction form
    143,133.68/197,520.72 = 79,469.84/x
  3. Step 3: Cross multiply
    143,133.68x = 197,520.72 × 79,469.84
  4. Step 4: Simplify right side
    143,133.68x = 15,696,940,015.08
  5. Step 5: Solve for x
    x = 15,696,940,015.08/143,133.68
  6. Step 6: Final answer
    x = 109,666.29

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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.