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Finding the Fourth Proportional to 143,191.80, 197,604.90 and 79,527.96

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Solution

The fourth proportional to 143,191.80, 197,604.90 and 79,527.96 is: 109,748.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,191.80 : 197,604.90 = 79,527.96 : x
  2. Step 2: Convert to fraction form
    143,191.80/197,604.90 = 79,527.96/x
  3. Step 3: Cross multiply
    143,191.80x = 197,604.90 × 79,527.96
  4. Step 4: Simplify right side
    143,191.80x = 15,715,114,583.00
  5. Step 5: Solve for x
    x = 15,715,114,583.00/143,191.80
  6. Step 6: Final answer
    x = 109,748.70

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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.