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Finding the Fourth Proportional to 135,945, 187,609.41 and 75,520.26

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Solution

The fourth proportional to 135,945, 187,609.41 and 75,520.26 is: 104,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,945 : 187,609.41 = 75,520.26 : x
  2. Step 2: Convert to fraction form
    135,945/187,609.41 = 75,520.26/x
  3. Step 3: Cross multiply
    135,945x = 187,609.41 × 75,520.26
  4. Step 4: Simplify right side
    135,945x = 14,168,311,421.65
  5. Step 5: Solve for x
    x = 14,168,311,421.65/135,945
  6. Step 6: Final answer
    x = 104,220.91

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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.