Home / 130,891.20-196,336.80-68,553.60

Finding the Fourth Proportional to 130,891.20, 196,336.80 and 68,553.60

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Solution

The fourth proportional to 130,891.20, 196,336.80 and 68,553.60 is: 102,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,891.20 : 196,336.80 = 68,553.60 : x
  2. Step 2: Convert to fraction form
    130,891.20/196,336.80 = 68,553.60/x
  3. Step 3: Cross multiply
    130,891.20x = 196,336.80 × 68,553.60
  4. Step 4: Simplify right side
    130,891.20x = 13,459,594,452.48
  5. Step 5: Solve for x
    x = 13,459,594,452.48/130,891.20
  6. Step 6: Final answer
    x = 102,830.40

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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.