Home / 149,147.19-205,827.45-81,168.54

Finding the Fourth Proportional to 149,147.19, 205,827.45 and 81,168.54

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Solution

The fourth proportional to 149,147.19, 205,827.45 and 81,168.54 is: 112,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,147.19 : 205,827.45 = 81,168.54 : x
  2. Step 2: Convert to fraction form
    149,147.19/205,827.45 = 81,168.54/x
  3. Step 3: Cross multiply
    149,147.19x = 205,827.45 × 81,168.54
  4. Step 4: Simplify right side
    149,147.19x = 16,706,713,608.42
  5. Step 5: Solve for x
    x = 16,706,713,608.42/149,147.19
  6. Step 6: Final answer
    x = 112,014.94

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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.