Home / 145,078.03-200,211.62-81,419.73

Finding the Fourth Proportional to 145,078.03, 200,211.62 and 81,419.73

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Solution

The fourth proportional to 145,078.03, 200,211.62 and 81,419.73 is: 112,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,078.03 : 200,211.62 = 81,419.73 : x
  2. Step 2: Convert to fraction form
    145,078.03/200,211.62 = 81,419.73/x
  3. Step 3: Cross multiply
    145,078.03x = 200,211.62 × 81,419.73
  4. Step 4: Simplify right side
    145,078.03x = 16,301,176,043.26
  5. Step 5: Solve for x
    x = 16,301,176,043.26/145,078.03
  6. Step 6: Final answer
    x = 112,361.44

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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.