Home / 209,687.90-314,531.85-51,916.36

Finding the Fourth Proportional to 209,687.90, 314,531.85 and 51,916.36

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Solution

The fourth proportional to 209,687.90, 314,531.85 and 51,916.36 is: 77,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,687.90 : 314,531.85 = 51,916.36 : x
  2. Step 2: Convert to fraction form
    209,687.90/314,531.85 = 51,916.36/x
  3. Step 3: Cross multiply
    209,687.90x = 314,531.85 × 51,916.36
  4. Step 4: Simplify right side
    209,687.90x = 16,329,347,183.41
  5. Step 5: Solve for x
    x = 16,329,347,183.41/209,687.90
  6. Step 6: Final answer
    x = 77,874.53

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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.