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Finding the Fourth Proportional to 143,247.84, 197,682 and 79,591.68

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Solution

The fourth proportional to 143,247.84, 197,682 and 79,591.68 is: 109,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,247.84 : 197,682 = 79,591.68 : x
  2. Step 2: Convert to fraction form
    143,247.84/197,682 = 79,591.68/x
  3. Step 3: Cross multiply
    143,247.84x = 197,682 × 79,591.68
  4. Step 4: Simplify right side
    143,247.84x = 15,733,842,485.76
  5. Step 5: Solve for x
    x = 15,733,842,485.76/143,247.84
  6. Step 6: Final answer
    x = 109,836.51

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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.