Home / 145,636.26-200,965.22-81,100.62

Finding the Fourth Proportional to 145,636.26, 200,965.22 and 81,100.62

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Solution

The fourth proportional to 145,636.26, 200,965.22 and 81,100.62 is: 111,911.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,636.26 : 200,965.22 = 81,100.62 : x
  2. Step 2: Convert to fraction form
    145,636.26/200,965.22 = 81,100.62/x
  3. Step 3: Cross multiply
    145,636.26x = 200,965.22 × 81,100.62
  4. Step 4: Simplify right side
    145,636.26x = 16,298,403,940.44
  5. Step 5: Solve for x
    x = 16,298,403,940.44/145,636.26
  6. Step 6: Final answer
    x = 111,911.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.