Home / 109,336.08-149,791.08-105,240.72

Finding the Fourth Proportional to 109,336.08, 149,791.08 and 105,240.72

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Solution

The fourth proportional to 109,336.08, 149,791.08 and 105,240.72 is: 144,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,336.08 : 149,791.08 = 105,240.72 : x
  2. Step 2: Convert to fraction form
    109,336.08/149,791.08 = 105,240.72/x
  3. Step 3: Cross multiply
    109,336.08x = 149,791.08 × 105,240.72
  4. Step 4: Simplify right side
    109,336.08x = 15,764,121,108.78
  5. Step 5: Solve for x
    x = 15,764,121,108.78/109,336.08
  6. Step 6: Final answer
    x = 144,180.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.