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Finding the Fourth Proportional to 131,892.80, 197,800.80 and 47,643.20

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Solution

The fourth proportional to 131,892.80, 197,800.80 and 47,643.20 is: 71,450.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,892.80 : 197,800.80 = 47,643.20 : x
  2. Step 2: Convert to fraction form
    131,892.80/197,800.80 = 47,643.20/x
  3. Step 3: Cross multiply
    131,892.80x = 197,800.80 × 47,643.20
  4. Step 4: Simplify right side
    131,892.80x = 9,423,863,074.56
  5. Step 5: Solve for x
    x = 9,423,863,074.56/131,892.80
  6. Step 6: Final answer
    x = 71,450.93

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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.