Home / 122,839.56-169,611-120,877.80

Finding the Fourth Proportional to 122,839.56, 169,611 and 120,877.80

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Solution

The fourth proportional to 122,839.56, 169,611 and 120,877.80 is: 166,902.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,839.56 : 169,611 = 120,877.80 : x
  2. Step 2: Convert to fraction form
    122,839.56/169,611 = 120,877.80/x
  3. Step 3: Cross multiply
    122,839.56x = 169,611 × 120,877.80
  4. Step 4: Simplify right side
    122,839.56x = 20,502,204,535.80
  5. Step 5: Solve for x
    x = 20,502,204,535.80/122,839.56
  6. Step 6: Final answer
    x = 166,902.30

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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.