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Finding the Fourth Proportional to 143,925.08, 215,698.08 and 80,744

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Solution

The fourth proportional to 143,925.08, 215,698.08 and 80,744 is: 121,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,925.08 : 215,698.08 = 80,744 : x
  2. Step 2: Convert to fraction form
    143,925.08/215,698.08 = 80,744/x
  3. Step 3: Cross multiply
    143,925.08x = 215,698.08 × 80,744
  4. Step 4: Simplify right side
    143,925.08x = 17,416,325,771.52
  5. Step 5: Solve for x
    x = 17,416,325,771.52/143,925.08
  6. Step 6: Final answer
    x = 121,009.67

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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.