Home / 135,609.10-187,144.98-75,185.36

Finding the Fourth Proportional to 135,609.10, 187,144.98 and 75,185.36

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Solution

The fourth proportional to 135,609.10, 187,144.98 and 75,185.36 is: 103,758.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,609.10 : 187,144.98 = 75,185.36 : x
  2. Step 2: Convert to fraction form
    135,609.10/187,144.98 = 75,185.36/x
  3. Step 3: Cross multiply
    135,609.10x = 187,144.98 × 75,185.36
  4. Step 4: Simplify right side
    135,609.10x = 14,070,563,653.22
  5. Step 5: Solve for x
    x = 14,070,563,653.22/135,609.10
  6. Step 6: Final answer
    x = 103,758.25

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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.