Home / 145,039.88-200,154.84-81,383.60

Finding the Fourth Proportional to 145,039.88, 200,154.84 and 81,383.60

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Solution

The fourth proportional to 145,039.88, 200,154.84 and 81,383.60 is: 112,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,039.88 : 200,154.84 = 81,383.60 : x
  2. Step 2: Convert to fraction form
    145,039.88/200,154.84 = 81,383.60/x
  3. Step 3: Cross multiply
    145,039.88x = 200,154.84 × 81,383.60
  4. Step 4: Simplify right side
    145,039.88x = 16,289,321,436.62
  5. Step 5: Solve for x
    x = 16,289,321,436.62/145,039.88
  6. Step 6: Final answer
    x = 112,309.26

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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.