Home / 136,758.08-188,735.64-76,340.60

Finding the Fourth Proportional to 136,758.08, 188,735.64 and 76,340.60

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Solution

The fourth proportional to 136,758.08, 188,735.64 and 76,340.60 is: 105,355.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,758.08 : 188,735.64 = 76,340.60 : x
  2. Step 2: Convert to fraction form
    136,758.08/188,735.64 = 76,340.60/x
  3. Step 3: Cross multiply
    136,758.08x = 188,735.64 × 76,340.60
  4. Step 4: Simplify right side
    136,758.08x = 14,408,191,998.98
  5. Step 5: Solve for x
    x = 14,408,191,998.98/136,758.08
  6. Step 6: Final answer
    x = 105,355.33

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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.