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Finding the Fourth Proportional to 131,574.60, 197,135.10 and 61,309.80

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Solution

The fourth proportional to 131,574.60, 197,135.10 and 61,309.80 is: 91,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,574.60 : 197,135.10 = 61,309.80 : x
  2. Step 2: Convert to fraction form
    131,574.60/197,135.10 = 61,309.80/x
  3. Step 3: Cross multiply
    131,574.60x = 197,135.10 × 61,309.80
  4. Step 4: Simplify right side
    131,574.60x = 12,086,313,553.98
  5. Step 5: Solve for x
    x = 12,086,313,553.98/131,574.60
  6. Step 6: Final answer
    x = 91,859.02

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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.