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Finding the Fourth Proportional to 143,318.84, 197,770.86 and 79,652.76

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Solution

The fourth proportional to 143,318.84, 197,770.86 and 79,652.76 is: 109,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,318.84 : 197,770.86 = 79,652.76 : x
  2. Step 2: Convert to fraction form
    143,318.84/197,770.86 = 79,652.76/x
  3. Step 3: Cross multiply
    143,318.84x = 197,770.86 × 79,652.76
  4. Step 4: Simplify right side
    143,318.84x = 15,752,994,846.57
  5. Step 5: Solve for x
    x = 15,752,994,846.57/143,318.84
  6. Step 6: Final answer
    x = 109,915.73

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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.