Home / 120,939.84-166,898.96-66,494.30

Finding the Fourth Proportional to 120,939.84, 166,898.96 and 66,494.30

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Solution

The fourth proportional to 120,939.84, 166,898.96 and 66,494.30 is: 91,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,939.84 : 166,898.96 = 66,494.30 : x
  2. Step 2: Convert to fraction form
    120,939.84/166,898.96 = 66,494.30/x
  3. Step 3: Cross multiply
    120,939.84x = 166,898.96 × 66,494.30
  4. Step 4: Simplify right side
    120,939.84x = 11,097,828,348.96
  5. Step 5: Solve for x
    x = 11,097,828,348.96/120,939.84
  6. Step 6: Final answer
    x = 91,763.21

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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.