Home / 100,765.72-151,170.42-30,643.18

Finding the Fourth Proportional to 100,765.72, 151,170.42 and 30,643.18

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Solution

The fourth proportional to 100,765.72, 151,170.42 and 30,643.18 is: 45,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,765.72 : 151,170.42 = 30,643.18 : x
  2. Step 2: Convert to fraction form
    100,765.72/151,170.42 = 30,643.18/x
  3. Step 3: Cross multiply
    100,765.72x = 151,170.42 × 30,643.18
  4. Step 4: Simplify right side
    100,765.72x = 4,632,342,390.74
  5. Step 5: Solve for x
    x = 4,632,342,390.74/100,765.72
  6. Step 6: Final answer
    x = 45,971.41

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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.