Home / 129,188.56-178,445.56-98,789.26

Finding the Fourth Proportional to 129,188.56, 178,445.56 and 98,789.26

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Solution

The fourth proportional to 129,188.56, 178,445.56 and 98,789.26 is: 136,455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,188.56 : 178,445.56 = 98,789.26 : x
  2. Step 2: Convert to fraction form
    129,188.56/178,445.56 = 98,789.26/x
  3. Step 3: Cross multiply
    129,188.56x = 178,445.56 × 98,789.26
  4. Step 4: Simplify right side
    129,188.56x = 17,628,504,822.69
  5. Step 5: Solve for x
    x = 17,628,504,822.69/129,188.56
  6. Step 6: Final answer
    x = 136,455.62

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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.