Home / 103,941.36-143,256.60-82,790.64

Finding the Fourth Proportional to 103,941.36, 143,256.60 and 82,790.64

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Solution

The fourth proportional to 103,941.36, 143,256.60 and 82,790.64 is: 114,105.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,941.36 : 143,256.60 = 82,790.64 : x
  2. Step 2: Convert to fraction form
    103,941.36/143,256.60 = 82,790.64/x
  3. Step 3: Cross multiply
    103,941.36x = 143,256.60 × 82,790.64
  4. Step 4: Simplify right side
    103,941.36x = 11,860,305,598.22
  5. Step 5: Solve for x
    x = 11,860,305,598.22/103,941.36
  6. Step 6: Final answer
    x = 114,105.74

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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.