Home / 100,986.60-151,487.10-30,865.80

Finding the Fourth Proportional to 100,986.60, 151,487.10 and 30,865.80

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Solution

The fourth proportional to 100,986.60, 151,487.10 and 30,865.80 is: 46,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,986.60 : 151,487.10 = 30,865.80 : x
  2. Step 2: Convert to fraction form
    100,986.60/151,487.10 = 30,865.80/x
  3. Step 3: Cross multiply
    100,986.60x = 151,487.10 × 30,865.80
  4. Step 4: Simplify right side
    100,986.60x = 4,675,770,531.18
  5. Step 5: Solve for x
    x = 4,675,770,531.18/100,986.60
  6. Step 6: Final answer
    x = 46,300.90

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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.