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Finding the Fourth Proportional to 115,015.60, 158,717.64 and 64,704.88

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Solution

The fourth proportional to 115,015.60, 158,717.64 and 64,704.88 is: 89,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,015.60 : 158,717.64 = 64,704.88 : x
  2. Step 2: Convert to fraction form
    115,015.60/158,717.64 = 64,704.88/x
  3. Step 3: Cross multiply
    115,015.60x = 158,717.64 × 64,704.88
  4. Step 4: Simplify right side
    115,015.60x = 10,269,805,850.08
  5. Step 5: Solve for x
    x = 10,269,805,850.08/115,015.60
  6. Step 6: Final answer
    x = 89,290.55

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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.