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Finding the Fourth Proportional to 115,199.75, 158,975.66 and 64,898.75

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Solution

The fourth proportional to 115,199.75, 158,975.66 and 64,898.75 is: 89,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,199.75 : 158,975.66 = 64,898.75 : x
  2. Step 2: Convert to fraction form
    115,199.75/158,975.66 = 64,898.75/x
  3. Step 3: Cross multiply
    115,199.75x = 158,975.66 × 64,898.75
  4. Step 4: Simplify right side
    115,199.75x = 10,317,321,614.43
  5. Step 5: Solve for x
    x = 10,317,321,614.43/115,199.75
  6. Step 6: Final answer
    x = 89,560.28

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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.