Home / 135,168.12-186,524.46-74,735.12

Finding the Fourth Proportional to 135,168.12, 186,524.46 and 74,735.12

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Solution

The fourth proportional to 135,168.12, 186,524.46 and 74,735.12 is: 103,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,168.12 : 186,524.46 = 74,735.12 : x
  2. Step 2: Convert to fraction form
    135,168.12/186,524.46 = 74,735.12/x
  3. Step 3: Cross multiply
    135,168.12x = 186,524.46 × 74,735.12
  4. Step 4: Simplify right side
    135,168.12x = 13,939,928,367.35
  5. Step 5: Solve for x
    x = 13,939,928,367.35/135,168.12
  6. Step 6: Final answer
    x = 103,130.30

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1.5x scale

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.