Home / 155,783.32-214,981.09-84,163.32

Finding the Fourth Proportional to 155,783.32, 214,981.09 and 84,163.32

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Solution

The fourth proportional to 155,783.32, 214,981.09 and 84,163.32 is: 116,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,783.32 : 214,981.09 = 84,163.32 : x
  2. Step 2: Convert to fraction form
    155,783.32/214,981.09 = 84,163.32/x
  3. Step 3: Cross multiply
    155,783.32x = 214,981.09 × 84,163.32
  4. Step 4: Simplify right side
    155,783.32x = 18,093,522,061.21
  5. Step 5: Solve for x
    x = 18,093,522,061.21/155,783.32
  6. Step 6: Final answer
    x = 116,145.44

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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.