Home / 108,949.66-150,368.38-90,771.57

Finding the Fourth Proportional to 108,949.66, 150,368.38 and 90,771.57

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Solution

The fourth proportional to 108,949.66, 150,368.38 and 90,771.57 is: 125,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,949.66 : 150,368.38 = 90,771.57 : x
  2. Step 2: Convert to fraction form
    108,949.66/150,368.38 = 90,771.57/x
  3. Step 3: Cross multiply
    108,949.66x = 150,368.38 × 90,771.57
  4. Step 4: Simplify right side
    108,949.66x = 13,649,173,704.03
  5. Step 5: Solve for x
    x = 13,649,173,704.03/108,949.66
  6. Step 6: Final answer
    x = 125,279.64

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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.