Home / 145,640.66-200,973.83-81,107.96

Finding the Fourth Proportional to 145,640.66, 200,973.83 and 81,107.96

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Solution

The fourth proportional to 145,640.66, 200,973.83 and 81,107.96 is: 111,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,640.66 : 200,973.83 = 81,107.96 : x
  2. Step 2: Convert to fraction form
    145,640.66/200,973.83 = 81,107.96/x
  3. Step 3: Cross multiply
    145,640.66x = 200,973.83 × 81,107.96
  4. Step 4: Simplify right side
    145,640.66x = 16,300,575,954.28
  5. Step 5: Solve for x
    x = 16,300,575,954.28/145,640.66
  6. Step 6: Final answer
    x = 111,923.25

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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.