Home / 136,899.42-188,915.67-76,469.10

Finding the Fourth Proportional to 136,899.42, 188,915.67 and 76,469.10

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Solution

The fourth proportional to 136,899.42, 188,915.67 and 76,469.10 is: 105,524.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,899.42 : 188,915.67 = 76,469.10 : x
  2. Step 2: Convert to fraction form
    136,899.42/188,915.67 = 76,469.10/x
  3. Step 3: Cross multiply
    136,899.42x = 188,915.67 × 76,469.10
  4. Step 4: Simplify right side
    136,899.42x = 14,446,211,260.80
  5. Step 5: Solve for x
    x = 14,446,211,260.80/136,899.42
  6. Step 6: Final answer
    x = 105,524.27

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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.