Home / 135,168.40-186,524.37-74,734.30

Finding the Fourth Proportional to 135,168.40, 186,524.37 and 74,734.30

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Solution

The fourth proportional to 135,168.40, 186,524.37 and 74,734.30 is: 103,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,168.40 : 186,524.37 = 74,734.30 : x
  2. Step 2: Convert to fraction form
    135,168.40/186,524.37 = 74,734.30/x
  3. Step 3: Cross multiply
    135,168.40x = 186,524.37 × 74,734.30
  4. Step 4: Simplify right side
    135,168.40x = 13,939,766,918.60
  5. Step 5: Solve for x
    x = 13,939,766,918.60/135,168.40
  6. Step 6: Final answer
    x = 103,128.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.