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Finding the Fourth Proportional to 115,880.88, 159,917.88 and 75,620.40

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Solution

The fourth proportional to 115,880.88, 159,917.88 and 75,620.40 is: 104,357.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,880.88 : 159,917.88 = 75,620.40 : x
  2. Step 2: Convert to fraction form
    115,880.88/159,917.88 = 75,620.40/x
  3. Step 3: Cross multiply
    115,880.88x = 159,917.88 × 75,620.40
  4. Step 4: Simplify right side
    115,880.88x = 12,093,054,052.75
  5. Step 5: Solve for x
    x = 12,093,054,052.75/115,880.88
  6. Step 6: Final answer
    x = 104,357.63

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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.