Home / 123,910.08-170,993.80-67,321.05

Finding the Fourth Proportional to 123,910.08, 170,993.80 and 67,321.05

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Solution

The fourth proportional to 123,910.08, 170,993.80 and 67,321.05 is: 92,901.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,910.08 : 170,993.80 = 67,321.05 : x
  2. Step 2: Convert to fraction form
    123,910.08/170,993.80 = 67,321.05/x
  3. Step 3: Cross multiply
    123,910.08x = 170,993.80 × 67,321.05
  4. Step 4: Simplify right side
    123,910.08x = 11,511,482,159.49
  5. Step 5: Solve for x
    x = 11,511,482,159.49/123,910.08
  6. Step 6: Final answer
    x = 92,901.90

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1.5x scale

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.