Home / 130,855.40-180,583.78-80,564.20

Finding the Fourth Proportional to 130,855.40, 180,583.78 and 80,564.20

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Solution

The fourth proportional to 130,855.40, 180,583.78 and 80,564.20 is: 111,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,855.40 : 180,583.78 = 80,564.20 : x
  2. Step 2: Convert to fraction form
    130,855.40/180,583.78 = 80,564.20/x
  3. Step 3: Cross multiply
    130,855.40x = 180,583.78 × 80,564.20
  4. Step 4: Simplify right side
    130,855.40x = 14,548,587,768.68
  5. Step 5: Solve for x
    x = 14,548,587,768.68/130,855.40
  6. Step 6: Final answer
    x = 111,180.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.