Home / 155,765.37-214,956.21-84,145.40

Finding the Fourth Proportional to 155,765.37, 214,956.21 and 84,145.40

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Solution

The fourth proportional to 155,765.37, 214,956.21 and 84,145.40 is: 116,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,765.37 : 214,956.21 = 84,145.40 : x
  2. Step 2: Convert to fraction form
    155,765.37/214,956.21 = 84,145.40/x
  3. Step 3: Cross multiply
    155,765.37x = 214,956.21 × 84,145.40
  4. Step 4: Simplify right side
    155,765.37x = 18,087,575,198.15
  5. Step 5: Solve for x
    x = 18,087,575,198.15/155,765.37
  6. Step 6: Final answer
    x = 116,120.64

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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.