Home / 85,201.98-127,758.09-45,243.36

Finding the Fourth Proportional to 85,201.98, 127,758.09 and 45,243.36

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Solution

The fourth proportional to 85,201.98, 127,758.09 and 45,243.36 is: 67,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,201.98 : 127,758.09 = 45,243.36 : x
  2. Step 2: Convert to fraction form
    85,201.98/127,758.09 = 45,243.36/x
  3. Step 3: Cross multiply
    85,201.98x = 127,758.09 × 45,243.36
  4. Step 4: Simplify right side
    85,201.98x = 5,780,205,258.78
  5. Step 5: Solve for x
    x = 5,780,205,258.78/85,201.98
  6. Step 6: Final answer
    x = 67,841.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.