Home / 208,979.06-313,579.30-90,733.42

Finding the Fourth Proportional to 208,979.06, 313,579.30 and 90,733.42

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Solution

The fourth proportional to 208,979.06, 313,579.30 and 90,733.42 is: 136,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,979.06 : 313,579.30 = 90,733.42 : x
  2. Step 2: Convert to fraction form
    208,979.06/313,579.30 = 90,733.42/x
  3. Step 3: Cross multiply
    208,979.06x = 313,579.30 × 90,733.42
  4. Step 4: Simplify right side
    208,979.06x = 28,452,122,330.21
  5. Step 5: Solve for x
    x = 28,452,122,330.21/208,979.06
  6. Step 6: Final answer
    x = 136,148.20

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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.