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Finding the Fourth Proportional to 206,074.07, 309,155.54 and 63,916.53

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Solution

The fourth proportional to 206,074.07, 309,155.54 and 63,916.53 is: 95,888.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,074.07 : 309,155.54 = 63,916.53 : x
  2. Step 2: Convert to fraction form
    206,074.07/309,155.54 = 63,916.53/x
  3. Step 3: Cross multiply
    206,074.07x = 309,155.54 × 63,916.53
  4. Step 4: Simplify right side
    206,074.07x = 19,760,149,172.41
  5. Step 5: Solve for x
    x = 19,760,149,172.41/206,074.07
  6. Step 6: Final answer
    x = 95,888.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.