Home / 100,920.56-151,379.60-30,800.06

Finding the Fourth Proportional to 100,920.56, 151,379.60 and 30,800.06

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Solution

The fourth proportional to 100,920.56, 151,379.60 and 30,800.06 is: 46,199.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,920.56 : 151,379.60 = 30,800.06 : x
  2. Step 2: Convert to fraction form
    100,920.56/151,379.60 = 30,800.06/x
  3. Step 3: Cross multiply
    100,920.56x = 151,379.60 × 30,800.06
  4. Step 4: Simplify right side
    100,920.56x = 4,662,500,762.78
  5. Step 5: Solve for x
    x = 4,662,500,762.78/100,920.56
  6. Step 6: Final answer
    x = 46,199.71

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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.