Home / 129,047.36-178,094.22-71,693.60

Finding the Fourth Proportional to 129,047.36, 178,094.22 and 71,693.60

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Solution

The fourth proportional to 129,047.36, 178,094.22 and 71,693.60 is: 98,942.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,047.36 : 178,094.22 = 71,693.60 : x
  2. Step 2: Convert to fraction form
    129,047.36/178,094.22 = 71,693.60/x
  3. Step 3: Cross multiply
    129,047.36x = 178,094.22 × 71,693.60
  4. Step 4: Simplify right side
    129,047.36x = 12,768,215,770.99
  5. Step 5: Solve for x
    x = 12,768,215,770.99/129,047.36
  6. Step 6: Final answer
    x = 98,942.09

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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.