Home / 129,976.80-195,195.60-100,466.40

Finding the Fourth Proportional to 129,976.80, 195,195.60 and 100,466.40

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Solution

The fourth proportional to 129,976.80, 195,195.60 and 100,466.40 is: 150,877.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,976.80 : 195,195.60 = 100,466.40 : x
  2. Step 2: Convert to fraction form
    129,976.80/195,195.60 = 100,466.40/x
  3. Step 3: Cross multiply
    129,976.80x = 195,195.60 × 100,466.40
  4. Step 4: Simplify right side
    129,976.80x = 19,610,599,227.84
  5. Step 5: Solve for x
    x = 19,610,599,227.84/129,976.80
  6. Step 6: Final answer
    x = 150,877.69

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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.