Home / 137,453.08-189,428.39-107,190.47

Finding the Fourth Proportional to 137,453.08, 189,428.39 and 107,190.47

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Solution

The fourth proportional to 137,453.08, 189,428.39 and 107,190.47 is: 147,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,453.08 : 189,428.39 = 107,190.47 : x
  2. Step 2: Convert to fraction form
    137,453.08/189,428.39 = 107,190.47/x
  3. Step 3: Cross multiply
    137,453.08x = 189,428.39 × 107,190.47
  4. Step 4: Simplify right side
    137,453.08x = 20,304,918,155.44
  5. Step 5: Solve for x
    x = 20,304,918,155.44/137,453.08
  6. Step 6: Final answer
    x = 147,722.54

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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.