Home / 206,821.16-285,522.20-139,193.65

Finding the Fourth Proportional to 206,821.16, 285,522.20 and 139,193.65

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Solution

The fourth proportional to 206,821.16, 285,522.20 and 139,193.65 is: 192,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,821.16 : 285,522.20 = 139,193.65 : x
  2. Step 2: Convert to fraction form
    206,821.16/285,522.20 = 139,193.65/x
  3. Step 3: Cross multiply
    206,821.16x = 285,522.20 × 139,193.65
  4. Step 4: Simplify right side
    206,821.16x = 39,742,877,174.03
  5. Step 5: Solve for x
    x = 39,742,877,174.03/206,821.16
  6. Step 6: Final answer
    x = 192,160.60

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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.