Home / 115,986.18-160,137.69-89,080.41

Finding the Fourth Proportional to 115,986.18, 160,137.69 and 89,080.41

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Solution

The fourth proportional to 115,986.18, 160,137.69 and 89,080.41 is: 122,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,986.18 : 160,137.69 = 89,080.41 : x
  2. Step 2: Convert to fraction form
    115,986.18/160,137.69 = 89,080.41/x
  3. Step 3: Cross multiply
    115,986.18x = 160,137.69 × 89,080.41
  4. Step 4: Simplify right side
    115,986.18x = 14,265,131,081.65
  5. Step 5: Solve for x
    x = 14,265,131,081.65/115,986.18
  6. Step 6: Final answer
    x = 122,989.92

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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.