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Finding the Fourth Proportional to 112,437.80, 168,786.30 and 68,114.60

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Solution

The fourth proportional to 112,437.80, 168,786.30 and 68,114.60 is: 102,250.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,437.80 : 168,786.30 = 68,114.60 : x
  2. Step 2: Convert to fraction form
    112,437.80/168,786.30 = 68,114.60/x
  3. Step 3: Cross multiply
    112,437.80x = 168,786.30 × 68,114.60
  4. Step 4: Simplify right side
    112,437.80x = 11,496,811,309.98
  5. Step 5: Solve for x
    x = 11,496,811,309.98/112,437.80
  6. Step 6: Final answer
    x = 102,250.41

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1.5x scale

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.