Home / 149,188.03-205,883.79-81,209.41

Finding the Fourth Proportional to 149,188.03, 205,883.79 and 81,209.41

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Solution

The fourth proportional to 149,188.03, 205,883.79 and 81,209.41 is: 112,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,188.03 : 205,883.79 = 81,209.41 : x
  2. Step 2: Convert to fraction form
    149,188.03/205,883.79 = 81,209.41/x
  3. Step 3: Cross multiply
    149,188.03x = 205,883.79 × 81,209.41
  4. Step 4: Simplify right side
    149,188.03x = 16,719,701,114.46
  5. Step 5: Solve for x
    x = 16,719,701,114.46/149,188.03
  6. Step 6: Final answer
    x = 112,071.33

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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.