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Finding the Fourth Proportional to 100,000.40, 150,000.60 and 40,805.60

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Solution

The fourth proportional to 100,000.40, 150,000.60 and 40,805.60 is: 61,208.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,000.40 : 150,000.60 = 40,805.60 : x
  2. Step 2: Convert to fraction form
    100,000.40/150,000.60 = 40,805.60/x
  3. Step 3: Cross multiply
    100,000.40x = 150,000.60 × 40,805.60
  4. Step 4: Simplify right side
    100,000.40x = 6,120,864,483.36
  5. Step 5: Solve for x
    x = 6,120,864,483.36/100,000.40
  6. Step 6: Final answer
    x = 61,208.40

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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.