Home / 130,578.03-195,822.39-85,910.40

Finding the Fourth Proportional to 130,578.03, 195,822.39 and 85,910.40

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Solution

The fourth proportional to 130,578.03, 195,822.39 and 85,910.40 is: 128,836.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,578.03 : 195,822.39 = 85,910.40 : x
  2. Step 2: Convert to fraction form
    130,578.03/195,822.39 = 85,910.40/x
  3. Step 3: Cross multiply
    130,578.03x = 195,822.39 × 85,910.40
  4. Step 4: Simplify right side
    130,578.03x = 16,823,179,853.86
  5. Step 5: Solve for x
    x = 16,823,179,853.86/130,578.03
  6. Step 6: Final answer
    x = 128,836.22

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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.