Home / 206,784.06-285,470.40-139,156.62

Finding the Fourth Proportional to 206,784.06, 285,470.40 and 139,156.62

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Solution

The fourth proportional to 206,784.06, 285,470.40 and 139,156.62 is: 192,109.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,784.06 : 285,470.40 = 139,156.62 : x
  2. Step 2: Convert to fraction form
    206,784.06/285,470.40 = 139,156.62/x
  3. Step 3: Cross multiply
    206,784.06x = 285,470.40 × 139,156.62
  4. Step 4: Simplify right side
    206,784.06x = 39,725,095,974.05
  5. Step 5: Solve for x
    x = 39,725,095,974.05/206,784.06
  6. Step 6: Final answer
    x = 192,109.08

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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.