Home / 155,783.49-214,981.22-84,163.51

Finding the Fourth Proportional to 155,783.49, 214,981.22 and 84,163.51

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Solution

The fourth proportional to 155,783.49, 214,981.22 and 84,163.51 is: 116,145.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,783.49 : 214,981.22 = 84,163.51 : x
  2. Step 2: Convert to fraction form
    155,783.49/214,981.22 = 84,163.51/x
  3. Step 3: Cross multiply
    155,783.49x = 214,981.22 × 84,163.51
  4. Step 4: Simplify right side
    155,783.49x = 18,093,574,538.42
  5. Step 5: Solve for x
    x = 18,093,574,538.42/155,783.49
  6. Step 6: Final answer
    x = 116,145.65

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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.