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Finding the Fourth Proportional to 180,550.80, 270,869.40 and 86,979.60

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Solution

The fourth proportional to 180,550.80, 270,869.40 and 86,979.60 is: 130,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,550.80 : 270,869.40 = 86,979.60 : x
  2. Step 2: Convert to fraction form
    180,550.80/270,869.40 = 86,979.60/x
  3. Step 3: Cross multiply
    180,550.80x = 270,869.40 × 86,979.60
  4. Step 4: Simplify right side
    180,550.80x = 23,560,112,064.24
  5. Step 5: Solve for x
    x = 23,560,112,064.24/180,550.80
  6. Step 6: Final answer
    x = 130,490.21

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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.