Home / 121,657.20-182,361.60-82,218.30

Finding the Fourth Proportional to 121,657.20, 182,361.60 and 82,218.30

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Solution

The fourth proportional to 121,657.20, 182,361.60 and 82,218.30 is: 123,243.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,657.20 : 182,361.60 = 82,218.30 : x
  2. Step 2: Convert to fraction form
    121,657.20/182,361.60 = 82,218.30/x
  3. Step 3: Cross multiply
    121,657.20x = 182,361.60 × 82,218.30
  4. Step 4: Simplify right side
    121,657.20x = 14,993,460,737.28
  5. Step 5: Solve for x
    x = 14,993,460,737.28/121,657.20
  6. Step 6: Final answer
    x = 123,243.51

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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.