Home / 205,916.64-309,074.69-99,375.58

Finding the Fourth Proportional to 205,916.64, 309,074.69 and 99,375.58

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Solution

The fourth proportional to 205,916.64, 309,074.69 and 99,375.58 is: 149,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,916.64 : 309,074.69 = 99,375.58 : x
  2. Step 2: Convert to fraction form
    205,916.64/309,074.69 = 99,375.58/x
  3. Step 3: Cross multiply
    205,916.64x = 309,074.69 × 99,375.58
  4. Step 4: Simplify right side
    205,916.64x = 30,714,476,085.19
  5. Step 5: Solve for x
    x = 30,714,476,085.19/205,916.64
  6. Step 6: Final answer
    x = 149,159.76

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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.