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Finding the Fourth Proportional to 123,467.20, 185,200.80 and 40,369.60

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Solution

The fourth proportional to 123,467.20, 185,200.80 and 40,369.60 is: 60,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,467.20 : 185,200.80 = 40,369.60 : x
  2. Step 2: Convert to fraction form
    123,467.20/185,200.80 = 40,369.60/x
  3. Step 3: Cross multiply
    123,467.20x = 185,200.80 × 40,369.60
  4. Step 4: Simplify right side
    123,467.20x = 7,476,482,215.68
  5. Step 5: Solve for x
    x = 7,476,482,215.68/123,467.20
  6. Step 6: Final answer
    x = 60,554.40

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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.