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Finding the Fourth Proportional to 179,980.30, 270,002.85 and 74,809.90

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Solution

The fourth proportional to 179,980.30, 270,002.85 and 74,809.90 is: 112,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,980.30 : 270,002.85 = 74,809.90 : x
  2. Step 2: Convert to fraction form
    179,980.30/270,002.85 = 74,809.90/x
  3. Step 3: Cross multiply
    179,980.30x = 270,002.85 × 74,809.90
  4. Step 4: Simplify right side
    179,980.30x = 20,198,886,208.22
  5. Step 5: Solve for x
    x = 20,198,886,208.22/179,980.30
  6. Step 6: Final answer
    x = 112,228.32

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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.