Home / 155,489.88-214,577.56-86,580.31

Finding the Fourth Proportional to 155,489.88, 214,577.56 and 86,580.31

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Solution

The fourth proportional to 155,489.88, 214,577.56 and 86,580.31 is: 119,481.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,489.88 : 214,577.56 = 86,580.31 : x
  2. Step 2: Convert to fraction form
    155,489.88/214,577.56 = 86,580.31/x
  3. Step 3: Cross multiply
    155,489.88x = 214,577.56 × 86,580.31
  4. Step 4: Simplify right side
    155,489.88x = 18,578,191,150.94
  5. Step 5: Solve for x
    x = 18,578,191,150.94/155,489.88
  6. Step 6: Final answer
    x = 119,481.68

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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.