Home / 109,717.03-151,420.69-79,115.33

Finding the Fourth Proportional to 109,717.03, 151,420.69 and 79,115.33

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Solution

The fourth proportional to 109,717.03, 151,420.69 and 79,115.33 is: 109,187.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,717.03 : 151,420.69 = 79,115.33 : x
  2. Step 2: Convert to fraction form
    109,717.03/151,420.69 = 79,115.33/x
  3. Step 3: Cross multiply
    109,717.03x = 151,420.69 × 79,115.33
  4. Step 4: Simplify right side
    109,717.03x = 11,979,698,335.62
  5. Step 5: Solve for x
    x = 11,979,698,335.62/109,717.03
  6. Step 6: Final answer
    x = 109,187.23

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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.