Home / 208,916.20-313,579.10-103,853.80

Finding the Fourth Proportional to 208,916.20, 313,579.10 and 103,853.80

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Solution

The fourth proportional to 208,916.20, 313,579.10 and 103,853.80 is: 155,882.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,916.20 : 313,579.10 = 103,853.80 : x
  2. Step 2: Convert to fraction form
    208,916.20/313,579.10 = 103,853.80/x
  3. Step 3: Cross multiply
    208,916.20x = 313,579.10 × 103,853.80
  4. Step 4: Simplify right side
    208,916.20x = 32,566,381,135.58
  5. Step 5: Solve for x
    x = 32,566,381,135.58/208,916.20
  6. Step 6: Final answer
    x = 155,882.51

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1.5x scale

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.