Home / 145,418.44-218,103-40,212.80

Finding the Fourth Proportional to 145,418.44, 218,103 and 40,212.80

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Solution

The fourth proportional to 145,418.44, 218,103 and 40,212.80 is: 60,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,418.44 : 218,103 = 40,212.80 : x
  2. Step 2: Convert to fraction form
    145,418.44/218,103 = 40,212.80/x
  3. Step 3: Cross multiply
    145,418.44x = 218,103 × 40,212.80
  4. Step 4: Simplify right side
    145,418.44x = 8,770,532,318.40
  5. Step 5: Solve for x
    x = 8,770,532,318.40/145,418.44
  6. Step 6: Final answer
    x = 60,312.38

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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.