Home / 121,940.40-167,903.84-106,748.04

Finding the Fourth Proportional to 121,940.40, 167,903.84 and 106,748.04

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Solution

The fourth proportional to 121,940.40, 167,903.84 and 106,748.04 is: 146,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,940.40 : 167,903.84 = 106,748.04 : x
  2. Step 2: Convert to fraction form
    121,940.40/167,903.84 = 106,748.04/x
  3. Step 3: Cross multiply
    121,940.40x = 167,903.84 × 106,748.04
  4. Step 4: Simplify right side
    121,940.40x = 17,923,405,828.47
  5. Step 5: Solve for x
    x = 17,923,405,828.47/121,940.40
  6. Step 6: Final answer
    x = 146,984.97

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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.