Home / 103,427.28-142,745.09-63,164.21

Finding the Fourth Proportional to 103,427.28, 142,745.09 and 63,164.21

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Solution

The fourth proportional to 103,427.28, 142,745.09 and 63,164.21 is: 87,176.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,427.28 : 142,745.09 = 63,164.21 : x
  2. Step 2: Convert to fraction form
    103,427.28/142,745.09 = 63,164.21/x
  3. Step 3: Cross multiply
    103,427.28x = 142,745.09 × 63,164.21
  4. Step 4: Simplify right side
    103,427.28x = 9,016,379,811.68
  5. Step 5: Solve for x
    x = 9,016,379,811.68/103,427.28
  6. Step 6: Final answer
    x = 87,176.03

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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.