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Finding the Fourth Proportional to 180,685.94, 270,979.95 and 75,482.90

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Solution

The fourth proportional to 180,685.94, 270,979.95 and 75,482.90 is: 113,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,685.94 : 270,979.95 = 75,482.90 : x
  2. Step 2: Convert to fraction form
    180,685.94/270,979.95 = 75,482.90/x
  3. Step 3: Cross multiply
    180,685.94x = 270,979.95 × 75,482.90
  4. Step 4: Simplify right side
    180,685.94x = 20,454,352,467.86
  5. Step 5: Solve for x
    x = 20,454,352,467.86/180,685.94
  6. Step 6: Final answer
    x = 113,203.90

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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.