Home / 130,105.67-195,015.02-85,108.34

Finding the Fourth Proportional to 130,105.67, 195,015.02 and 85,108.34

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Solution

The fourth proportional to 130,105.67, 195,015.02 and 85,108.34 is: 127,568.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,105.67 : 195,015.02 = 85,108.34 : x
  2. Step 2: Convert to fraction form
    130,105.67/195,015.02 = 85,108.34/x
  3. Step 3: Cross multiply
    130,105.67x = 195,015.02 × 85,108.34
  4. Step 4: Simplify right side
    130,105.67x = 16,597,405,327.58
  5. Step 5: Solve for x
    x = 16,597,405,327.58/130,105.67
  6. Step 6: Final answer
    x = 127,568.66

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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.