Home / 126,431.29-189,579.52-55,270.63

Finding the Fourth Proportional to 126,431.29, 189,579.52 and 55,270.63

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Solution

The fourth proportional to 126,431.29, 189,579.52 and 55,270.63 is: 82,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,431.29 : 189,579.52 = 55,270.63 : x
  2. Step 2: Convert to fraction form
    126,431.29/189,579.52 = 55,270.63/x
  3. Step 3: Cross multiply
    126,431.29x = 189,579.52 × 55,270.63
  4. Step 4: Simplify right side
    126,431.29x = 10,478,179,505.50
  5. Step 5: Solve for x
    x = 10,478,179,505.50/126,431.29
  6. Step 6: Final answer
    x = 82,876.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.