Home / 130,589.51-195,621.81-68,128.79

Finding the Fourth Proportional to 130,589.51, 195,621.81 and 68,128.79

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Solution

The fourth proportional to 130,589.51, 195,621.81 and 68,128.79 is: 102,056.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,589.51 : 195,621.81 = 68,128.79 : x
  2. Step 2: Convert to fraction form
    130,589.51/195,621.81 = 68,128.79/x
  3. Step 3: Cross multiply
    130,589.51x = 195,621.81 × 68,128.79
  4. Step 4: Simplify right side
    130,589.51x = 13,327,476,234.80
  5. Step 5: Solve for x
    x = 13,327,476,234.80/130,589.51
  6. Step 6: Final answer
    x = 102,056.26

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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.