Home / 135,344.81-186,771.07-74,915.57

Finding the Fourth Proportional to 135,344.81, 186,771.07 and 74,915.57

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Solution

The fourth proportional to 135,344.81, 186,771.07 and 74,915.57 is: 103,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,344.81 : 186,771.07 = 74,915.57 : x
  2. Step 2: Convert to fraction form
    135,344.81/186,771.07 = 74,915.57/x
  3. Step 3: Cross multiply
    135,344.81x = 186,771.07 × 74,915.57
  4. Step 4: Simplify right side
    135,344.81x = 13,992,061,168.56
  5. Step 5: Solve for x
    x = 13,992,061,168.56/135,344.81
  6. Step 6: Final answer
    x = 103,380.85

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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.