Home / 149,528.10-206,342.97-85,005.78

Finding the Fourth Proportional to 149,528.10, 206,342.97 and 85,005.78

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Solution

The fourth proportional to 149,528.10, 206,342.97 and 85,005.78 is: 117,304.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,528.10 : 206,342.97 = 85,005.78 : x
  2. Step 2: Convert to fraction form
    149,528.10/206,342.97 = 85,005.78/x
  3. Step 3: Cross multiply
    149,528.10x = 206,342.97 × 85,005.78
  4. Step 4: Simplify right side
    149,528.10x = 17,540,345,112.37
  5. Step 5: Solve for x
    x = 17,540,345,112.37/149,528.10
  6. Step 6: Final answer
    x = 117,304.67

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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.