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Finding the Fourth Proportional to 140,604.58, 210,956.08 and 40,770.76

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Solution

The fourth proportional to 140,604.58, 210,956.08 and 40,770.76 is: 61,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,604.58 : 210,956.08 = 40,770.76 : x
  2. Step 2: Convert to fraction form
    140,604.58/210,956.08 = 40,770.76/x
  3. Step 3: Cross multiply
    140,604.58x = 210,956.08 × 40,770.76
  4. Step 4: Simplify right side
    140,604.58x = 8,600,839,708.22
  5. Step 5: Solve for x
    x = 8,600,839,708.22/140,604.58
  6. Step 6: Final answer
    x = 61,170.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.