Home / 109,791.08-151,512.86-64,469.60

Finding the Fourth Proportional to 109,791.08, 151,512.86 and 64,469.60

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Solution

The fourth proportional to 109,791.08, 151,512.86 and 64,469.60 is: 88,968.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,791.08 : 151,512.86 = 64,469.60 : x
  2. Step 2: Convert to fraction form
    109,791.08/151,512.86 = 64,469.60/x
  3. Step 3: Cross multiply
    109,791.08x = 151,512.86 × 64,469.60
  4. Step 4: Simplify right side
    109,791.08x = 9,767,972,882.67
  5. Step 5: Solve for x
    x = 9,767,972,882.67/109,791.08
  6. Step 6: Final answer
    x = 88,968.73

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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.