Home / 206,820.16-285,520.82-139,192.65

Finding the Fourth Proportional to 206,820.16, 285,520.82 and 139,192.65

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Solution

The fourth proportional to 206,820.16, 285,520.82 and 139,192.65 is: 192,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,820.16 : 285,520.82 = 139,192.65 : x
  2. Step 2: Convert to fraction form
    206,820.16/285,520.82 = 139,192.65/x
  3. Step 3: Cross multiply
    206,820.16x = 285,520.82 × 139,192.65
  4. Step 4: Simplify right side
    206,820.16x = 39,742,398,870.01
  5. Step 5: Solve for x
    x = 39,742,398,870.01/206,820.16
  6. Step 6: Final answer
    x = 192,159.21

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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.