Home / 130,678.20-195,725.70-100,999.80

Finding the Fourth Proportional to 130,678.20, 195,725.70 and 100,999.80

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Solution

The fourth proportional to 130,678.20, 195,725.70 and 100,999.80 is: 151,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,678.20 : 195,725.70 = 100,999.80 : x
  2. Step 2: Convert to fraction form
    130,678.20/195,725.70 = 100,999.80/x
  3. Step 3: Cross multiply
    130,678.20x = 195,725.70 × 100,999.80
  4. Step 4: Simplify right side
    130,678.20x = 19,768,256,554.86
  5. Step 5: Solve for x
    x = 19,768,256,554.86/130,678.20
  6. Step 6: Final answer
    x = 151,274.33

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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.