Home / 136,688.46-188,629.79-76,255.49

Finding the Fourth Proportional to 136,688.46, 188,629.79 and 76,255.49

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Solution

The fourth proportional to 136,688.46, 188,629.79 and 76,255.49 is: 105,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,688.46 : 188,629.79 = 76,255.49 : x
  2. Step 2: Convert to fraction form
    136,688.46/188,629.79 = 76,255.49/x
  3. Step 3: Cross multiply
    136,688.46x = 188,629.79 × 76,255.49
  4. Step 4: Simplify right side
    136,688.46x = 14,384,057,155.34
  5. Step 5: Solve for x
    x = 14,384,057,155.34/136,688.46
  6. Step 6: Final answer
    x = 105,232.42

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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.