Home / 129,450.40-178,622.96-75,725.26

Finding the Fourth Proportional to 129,450.40, 178,622.96 and 75,725.26

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Solution

The fourth proportional to 129,450.40, 178,622.96 and 75,725.26 is: 104,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,450.40 : 178,622.96 = 75,725.26 : x
  2. Step 2: Convert to fraction form
    129,450.40/178,622.96 = 75,725.26/x
  3. Step 3: Cross multiply
    129,450.40x = 178,622.96 × 75,725.26
  4. Step 4: Simplify right side
    129,450.40x = 13,526,270,087.97
  5. Step 5: Solve for x
    x = 13,526,270,087.97/129,450.40
  6. Step 6: Final answer
    x = 104,489.98

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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.