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Finding the Fourth Proportional to 110,515.40, 165,837.90 and 40,401.80

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Solution

The fourth proportional to 110,515.40, 165,837.90 and 40,401.80 is: 60,626.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,515.40 : 165,837.90 = 40,401.80 : x
  2. Step 2: Convert to fraction form
    110,515.40/165,837.90 = 40,401.80/x
  3. Step 3: Cross multiply
    110,515.40x = 165,837.90 × 40,401.80
  4. Step 4: Simplify right side
    110,515.40x = 6,700,149,668.22
  5. Step 5: Solve for x
    x = 6,700,149,668.22/110,515.40
  6. Step 6: Final answer
    x = 60,626.39

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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.