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Finding the Fourth Proportional to 143,188.88, 197,600.72 and 79,527.20

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Solution

The fourth proportional to 143,188.88, 197,600.72 and 79,527.20 is: 109,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,188.88 : 197,600.72 = 79,527.20 : x
  2. Step 2: Convert to fraction form
    143,188.88/197,600.72 = 79,527.20/x
  3. Step 3: Cross multiply
    143,188.88x = 197,600.72 × 79,527.20
  4. Step 4: Simplify right side
    143,188.88x = 15,714,630,593.94
  5. Step 5: Solve for x
    x = 15,714,630,593.94/143,188.88
  6. Step 6: Final answer
    x = 109,747.57

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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.