Home / 121,902.45-168,243.33-74,146.56

Finding the Fourth Proportional to 121,902.45, 168,243.33 and 74,146.56

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Solution

The fourth proportional to 121,902.45, 168,243.33 and 74,146.56 is: 102,333.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,902.45 : 168,243.33 = 74,146.56 : x
  2. Step 2: Convert to fraction form
    121,902.45/168,243.33 = 74,146.56/x
  3. Step 3: Cross multiply
    121,902.45x = 168,243.33 × 74,146.56
  4. Step 4: Simplify right side
    121,902.45x = 12,474,664,162.44
  5. Step 5: Solve for x
    x = 12,474,664,162.44/121,902.45
  6. Step 6: Final answer
    x = 102,333.17

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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.