Home / 137,718.70-206,578.05-74,514.40

Finding the Fourth Proportional to 137,718.70, 206,578.05 and 74,514.40

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Solution

The fourth proportional to 137,718.70, 206,578.05 and 74,514.40 is: 111,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,718.70 : 206,578.05 = 74,514.40 : x
  2. Step 2: Convert to fraction form
    137,718.70/206,578.05 = 74,514.40/x
  3. Step 3: Cross multiply
    137,718.70x = 206,578.05 × 74,514.40
  4. Step 4: Simplify right side
    137,718.70x = 15,393,039,448.92
  5. Step 5: Solve for x
    x = 15,393,039,448.92/137,718.70
  6. Step 6: Final answer
    x = 111,771.60

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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.