Home / 125,939.62-188,983.25-90,362.60

Finding the Fourth Proportional to 125,939.62, 188,983.25 and 90,362.60

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Solution

The fourth proportional to 125,939.62, 188,983.25 and 90,362.60 is: 135,596.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,939.62 : 188,983.25 = 90,362.60 : x
  2. Step 2: Convert to fraction form
    125,939.62/188,983.25 = 90,362.60/x
  3. Step 3: Cross multiply
    125,939.62x = 188,983.25 × 90,362.60
  4. Step 4: Simplify right side
    125,939.62x = 17,077,017,492.75
  5. Step 5: Solve for x
    x = 17,077,017,492.75/125,939.62
  6. Step 6: Final answer
    x = 135,596.86

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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.