Home / 143,586.37-198,323.31-105,290.65

Finding the Fourth Proportional to 143,586.37, 198,323.31 and 105,290.65

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Solution

The fourth proportional to 143,586.37, 198,323.31 and 105,290.65 is: 145,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,586.37 : 198,323.31 = 105,290.65 : x
  2. Step 2: Convert to fraction form
    143,586.37/198,323.31 = 105,290.65/x
  3. Step 3: Cross multiply
    143,586.37x = 198,323.31 × 105,290.65
  4. Step 4: Simplify right side
    143,586.37x = 20,881,590,220.05
  5. Step 5: Solve for x
    x = 20,881,590,220.05/143,586.37
  6. Step 6: Final answer
    x = 145,428.78

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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.