Home / 115,986.45-160,138.41-89,080.89

Finding the Fourth Proportional to 115,986.45, 160,138.41 and 89,080.89

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Solution

The fourth proportional to 115,986.45, 160,138.41 and 89,080.89 is: 122,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,986.45 : 160,138.41 = 89,080.89 : x
  2. Step 2: Convert to fraction form
    115,986.45/160,138.41 = 89,080.89/x
  3. Step 3: Cross multiply
    115,986.45x = 160,138.41 × 89,080.89
  4. Step 4: Simplify right side
    115,986.45x = 14,265,272,085.98
  5. Step 5: Solve for x
    x = 14,265,272,085.98/115,986.45
  6. Step 6: Final answer
    x = 122,990.85

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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.