Home / 115,986.20-160,138.05-89,080.63

Finding the Fourth Proportional to 115,986.20, 160,138.05 and 89,080.63

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Solution

The fourth proportional to 115,986.20, 160,138.05 and 89,080.63 is: 122,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,986.20 : 160,138.05 = 89,080.63 : x
  2. Step 2: Convert to fraction form
    115,986.20/160,138.05 = 89,080.63/x
  3. Step 3: Cross multiply
    115,986.20x = 160,138.05 × 89,080.63
  4. Step 4: Simplify right side
    115,986.20x = 14,265,198,380.97
  5. Step 5: Solve for x
    x = 14,265,198,380.97/115,986.20
  6. Step 6: Final answer
    x = 122,990.48

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1.5x scale

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.