Home / 136,622.64-188,538.88-76,193.36

Finding the Fourth Proportional to 136,622.64, 188,538.88 and 76,193.36

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Solution

The fourth proportional to 136,622.64, 188,538.88 and 76,193.36 is: 105,146.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,622.64 : 188,538.88 = 76,193.36 : x
  2. Step 2: Convert to fraction form
    136,622.64/188,538.88 = 76,193.36/x
  3. Step 3: Cross multiply
    136,622.64x = 188,538.88 × 76,193.36
  4. Step 4: Simplify right side
    136,622.64x = 14,365,410,757.84
  5. Step 5: Solve for x
    x = 14,365,410,757.84/136,622.64
  6. Step 6: Final answer
    x = 105,146.63

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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.