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Finding the Fourth Proportional to 131,515.80, 197,200.80 and 56,623.20

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Solution

The fourth proportional to 131,515.80, 197,200.80 and 56,623.20 is: 84,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,515.80 : 197,200.80 = 56,623.20 : x
  2. Step 2: Convert to fraction form
    131,515.80/197,200.80 = 56,623.20/x
  3. Step 3: Cross multiply
    131,515.80x = 197,200.80 × 56,623.20
  4. Step 4: Simplify right side
    131,515.80x = 11,166,140,338.56
  5. Step 5: Solve for x
    x = 11,166,140,338.56/131,515.80
  6. Step 6: Final answer
    x = 84,903.41

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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.