Home / 130,579.51-195,869.33-86,195.89

Finding the Fourth Proportional to 130,579.51, 195,869.33 and 86,195.89

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Solution

The fourth proportional to 130,579.51, 195,869.33 and 86,195.89 is: 129,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,579.51 : 195,869.33 = 86,195.89 : x
  2. Step 2: Convert to fraction form
    130,579.51/195,869.33 = 86,195.89/x
  3. Step 3: Cross multiply
    130,579.51x = 195,869.33 × 86,195.89
  4. Step 4: Simplify right side
    130,579.51x = 16,883,131,223.05
  5. Step 5: Solve for x
    x = 16,883,131,223.05/130,579.51
  6. Step 6: Final answer
    x = 129,293.88

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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.