Home / 142,879.09-214,330.32-71,765.16

Finding the Fourth Proportional to 142,879.09, 214,330.32 and 71,765.16

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Solution

The fourth proportional to 142,879.09, 214,330.32 and 71,765.16 is: 107,653.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,879.09 : 214,330.32 = 71,765.16 : x
  2. Step 2: Convert to fraction form
    142,879.09/214,330.32 = 71,765.16/x
  3. Step 3: Cross multiply
    142,879.09x = 214,330.32 × 71,765.16
  4. Step 4: Simplify right side
    142,879.09x = 15,381,449,707.65
  5. Step 5: Solve for x
    x = 15,381,449,707.65/142,879.09
  6. Step 6: Final answer
    x = 107,653.61

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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.