Home / 145,388.21-200,636.82-80,858.34

Finding the Fourth Proportional to 145,388.21, 200,636.82 and 80,858.34

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Solution

The fourth proportional to 145,388.21, 200,636.82 and 80,858.34 is: 111,585.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,388.21 : 200,636.82 = 80,858.34 : x
  2. Step 2: Convert to fraction form
    145,388.21/200,636.82 = 80,858.34/x
  3. Step 3: Cross multiply
    145,388.21x = 200,636.82 × 80,858.34
  4. Step 4: Simplify right side
    145,388.21x = 16,223,160,208.08
  5. Step 5: Solve for x
    x = 16,223,160,208.08/145,388.21
  6. Step 6: Final answer
    x = 111,585.12

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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.