Home / 149,188.28-205,884.14-81,209.66

Finding the Fourth Proportional to 149,188.28, 205,884.14 and 81,209.66

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Solution

The fourth proportional to 149,188.28, 205,884.14 and 81,209.66 is: 112,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,188.28 : 205,884.14 = 81,209.66 : x
  2. Step 2: Convert to fraction form
    149,188.28/205,884.14 = 81,209.66/x
  3. Step 3: Cross multiply
    149,188.28x = 205,884.14 × 81,209.66
  4. Step 4: Simplify right side
    149,188.28x = 16,719,781,008.79
  5. Step 5: Solve for x
    x = 16,719,781,008.79/149,188.28
  6. Step 6: Final answer
    x = 112,071.68

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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.