Home / 151,392.06-208,921.68-86,863.86

Finding the Fourth Proportional to 151,392.06, 208,921.68 and 86,863.86

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Solution

The fourth proportional to 151,392.06, 208,921.68 and 86,863.86 is: 119,872.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,392.06 : 208,921.68 = 86,863.86 : x
  2. Step 2: Convert to fraction form
    151,392.06/208,921.68 = 86,863.86/x
  3. Step 3: Cross multiply
    151,392.06x = 208,921.68 × 86,863.86
  4. Step 4: Simplify right side
    151,392.06x = 18,147,743,562.48
  5. Step 5: Solve for x
    x = 18,147,743,562.48/151,392.06
  6. Step 6: Final answer
    x = 119,872.49

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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.