Home / 155,782.40-214,979.88-84,162.56

Finding the Fourth Proportional to 155,782.40, 214,979.88 and 84,162.56

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Solution

The fourth proportional to 155,782.40, 214,979.88 and 84,162.56 is: 116,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,782.40 : 214,979.88 = 84,162.56 : x
  2. Step 2: Convert to fraction form
    155,782.40/214,979.88 = 84,162.56/x
  3. Step 3: Cross multiply
    155,782.40x = 214,979.88 × 84,162.56
  4. Step 4: Simplify right side
    155,782.40x = 18,093,257,049.29
  5. Step 5: Solve for x
    x = 18,093,257,049.29/155,782.40
  6. Step 6: Final answer
    x = 116,144.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.