Home / 120,715.98-166,586.84-66,999.61

Finding the Fourth Proportional to 120,715.98, 166,586.84 and 66,999.61

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Solution

The fourth proportional to 120,715.98, 166,586.84 and 66,999.61 is: 92,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,715.98 : 166,586.84 = 66,999.61 : x
  2. Step 2: Convert to fraction form
    120,715.98/166,586.84 = 66,999.61/x
  3. Step 3: Cross multiply
    120,715.98x = 166,586.84 × 66,999.61
  4. Step 4: Simplify right side
    120,715.98x = 11,161,253,812.49
  5. Step 5: Solve for x
    x = 11,161,253,812.49/120,715.98
  6. Step 6: Final answer
    x = 92,458.80

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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.