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Finding the Fourth Proportional to 115,986.57, 173,855.46 and 75,990.44

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Solution

The fourth proportional to 115,986.57, 173,855.46 and 75,990.44 is: 113,904.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,986.57 : 173,855.46 = 75,990.44 : x
  2. Step 2: Convert to fraction form
    115,986.57/173,855.46 = 75,990.44/x
  3. Step 3: Cross multiply
    115,986.57x = 173,855.46 × 75,990.44
  4. Step 4: Simplify right side
    115,986.57x = 13,211,352,643.47
  5. Step 5: Solve for x
    x = 13,211,352,643.47/115,986.57
  6. Step 6: Final answer
    x = 113,904.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.