Home / 143,942.40-198,732.96-90,300.96

Finding the Fourth Proportional to 143,942.40, 198,732.96 and 90,300.96

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Solution

The fourth proportional to 143,942.40, 198,732.96 and 90,300.96 is: 124,673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,942.40 : 198,732.96 = 90,300.96 : x
  2. Step 2: Convert to fraction form
    143,942.40/198,732.96 = 90,300.96/x
  3. Step 3: Cross multiply
    143,942.40x = 198,732.96 × 90,300.96
  4. Step 4: Simplify right side
    143,942.40x = 17,945,777,071.64
  5. Step 5: Solve for x
    x = 17,945,777,071.64/143,942.40
  6. Step 6: Final answer
    x = 124,673.32

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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.