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Finding the Fourth Proportional to 120,165.80, 179,870.78 and 82,505.48

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Solution

The fourth proportional to 120,165.80, 179,870.78 and 82,505.48 is: 123,498.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,165.80 : 179,870.78 = 82,505.48 : x
  2. Step 2: Convert to fraction form
    120,165.80/179,870.78 = 82,505.48/x
  3. Step 3: Cross multiply
    120,165.80x = 179,870.78 × 82,505.48
  4. Step 4: Simplify right side
    120,165.80x = 14,840,325,041.87
  5. Step 5: Solve for x
    x = 14,840,325,041.87/120,165.80
  6. Step 6: Final answer
    x = 123,498.74

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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.