Home / 90,018.69-135,028.08-23,458.65

Finding the Fourth Proportional to 90,018.69, 135,028.08 and 23,458.65

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Solution

The fourth proportional to 90,018.69, 135,028.08 and 23,458.65 is: 35,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,018.69 : 135,028.08 = 23,458.65 : x
  2. Step 2: Convert to fraction form
    90,018.69/135,028.08 = 23,458.65/x
  3. Step 3: Cross multiply
    90,018.69x = 135,028.08 × 23,458.65
  4. Step 4: Simplify right side
    90,018.69x = 3,167,576,788.05
  5. Step 5: Solve for x
    x = 3,167,576,788.05/90,018.69
  6. Step 6: Final answer
    x = 35,187.99

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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.