Home / 129,672.36-178,945.38-73,082.60

Finding the Fourth Proportional to 129,672.36, 178,945.38 and 73,082.60

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Solution

The fourth proportional to 129,672.36, 178,945.38 and 73,082.60 is: 100,852.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,672.36 : 178,945.38 = 73,082.60 : x
  2. Step 2: Convert to fraction form
    129,672.36/178,945.38 = 73,082.60/x
  3. Step 3: Cross multiply
    129,672.36x = 178,945.38 × 73,082.60
  4. Step 4: Simplify right side
    129,672.36x = 13,077,793,628.39
  5. Step 5: Solve for x
    x = 13,077,793,628.39/129,672.36
  6. Step 6: Final answer
    x = 100,852.59

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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.