Home / 111,738.80-167,478.60-45,135.20

Finding the Fourth Proportional to 111,738.80, 167,478.60 and 45,135.20

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Solution

The fourth proportional to 111,738.80, 167,478.60 and 45,135.20 is: 67,650.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,738.80 : 167,478.60 = 45,135.20 : x
  2. Step 2: Convert to fraction form
    111,738.80/167,478.60 = 45,135.20/x
  3. Step 3: Cross multiply
    111,738.80x = 167,478.60 × 45,135.20
  4. Step 4: Simplify right side
    111,738.80x = 7,559,180,106.72
  5. Step 5: Solve for x
    x = 7,559,180,106.72/111,738.80
  6. Step 6: Final answer
    x = 67,650.45

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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.