Home / 145,418.21-218,331.67-74,391.80

Finding the Fourth Proportional to 145,418.21, 218,331.67 and 74,391.80

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Solution

The fourth proportional to 145,418.21, 218,331.67 and 74,391.80 is: 111,692.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,418.21 : 218,331.67 = 74,391.80 : x
  2. Step 2: Convert to fraction form
    145,418.21/218,331.67 = 74,391.80/x
  3. Step 3: Cross multiply
    145,418.21x = 218,331.67 × 74,391.80
  4. Step 4: Simplify right side
    145,418.21x = 16,242,084,790.15
  5. Step 5: Solve for x
    x = 16,242,084,790.15/145,418.21
  6. Step 6: Final answer
    x = 111,692.24

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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.