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Finding the Fourth Proportional to 103,682.80, 155,293.80 and 89,858.80

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Solution

The fourth proportional to 103,682.80, 155,293.80 and 89,858.80 is: 134,588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,682.80 : 155,293.80 = 89,858.80 : x
  2. Step 2: Convert to fraction form
    103,682.80/155,293.80 = 89,858.80/x
  3. Step 3: Cross multiply
    103,682.80x = 155,293.80 × 89,858.80
  4. Step 4: Simplify right side
    103,682.80x = 13,954,514,515.44
  5. Step 5: Solve for x
    x = 13,954,514,515.44/103,682.80
  6. Step 6: Final answer
    x = 134,588.52

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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.