Home / 91,880.20-137,820.30-91,102.60

Finding the Fourth Proportional to 91,880.20, 137,820.30 and 91,102.60

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Solution

The fourth proportional to 91,880.20, 137,820.30 and 91,102.60 is: 136,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,880.20 : 137,820.30 = 91,102.60 : x
  2. Step 2: Convert to fraction form
    91,880.20/137,820.30 = 91,102.60/x
  3. Step 3: Cross multiply
    91,880.20x = 137,820.30 × 91,102.60
  4. Step 4: Simplify right side
    91,880.20x = 12,555,787,662.78
  5. Step 5: Solve for x
    x = 12,555,787,662.78/91,880.20
  6. Step 6: Final answer
    x = 136,653.90

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1.5x scale

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.