Home / 130,392.05-195,659.15-86,039.69

Finding the Fourth Proportional to 130,392.05, 195,659.15 and 86,039.69

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Solution

The fourth proportional to 130,392.05, 195,659.15 and 86,039.69 is: 129,106.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,392.05 : 195,659.15 = 86,039.69 : x
  2. Step 2: Convert to fraction form
    130,392.05/195,659.15 = 86,039.69/x
  3. Step 3: Cross multiply
    130,392.05x = 195,659.15 × 86,039.69
  4. Step 4: Simplify right side
    130,392.05x = 16,834,451,203.17
  5. Step 5: Solve for x
    x = 16,834,451,203.17/130,392.05
  6. Step 6: Final answer
    x = 129,106.43

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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.