Home / 115,109.90-158,849.26-64,122.56

Finding the Fourth Proportional to 115,109.90, 158,849.26 and 64,122.56

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Solution

The fourth proportional to 115,109.90, 158,849.26 and 64,122.56 is: 88,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,109.90 : 158,849.26 = 64,122.56 : x
  2. Step 2: Convert to fraction form
    115,109.90/158,849.26 = 64,122.56/x
  3. Step 3: Cross multiply
    115,109.90x = 158,849.26 × 64,122.56
  4. Step 4: Simplify right side
    115,109.90x = 10,185,821,205.31
  5. Step 5: Solve for x
    x = 10,185,821,205.31/115,109.90
  6. Step 6: Final answer
    x = 88,487.79

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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.