Home / 135,139.38-186,497.60-89,739.08

Finding the Fourth Proportional to 135,139.38, 186,497.60 and 89,739.08

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Solution

The fourth proportional to 135,139.38, 186,497.60 and 89,739.08 is: 123,843.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,139.38 : 186,497.60 = 89,739.08 : x
  2. Step 2: Convert to fraction form
    135,139.38/186,497.60 = 89,739.08/x
  3. Step 3: Cross multiply
    135,139.38x = 186,497.60 × 89,739.08
  4. Step 4: Simplify right side
    135,139.38x = 16,736,121,665.02
  5. Step 5: Solve for x
    x = 16,736,121,665.02/135,139.38
  6. Step 6: Final answer
    x = 123,843.41

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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.