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Finding the Fourth Proportional to 180,390.94, 270,679.79 and 130,879.69

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Solution

The fourth proportional to 180,390.94, 270,679.79 and 130,879.69 is: 196,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,390.94 : 270,679.79 = 130,879.69 : x
  2. Step 2: Convert to fraction form
    180,390.94/270,679.79 = 130,879.69/x
  3. Step 3: Cross multiply
    180,390.94x = 270,679.79 × 130,879.69
  4. Step 4: Simplify right side
    180,390.94x = 35,426,487,004.47
  5. Step 5: Solve for x
    x = 35,426,487,004.47/180,390.94
  6. Step 6: Final answer
    x = 196,387.29

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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.