Home / 136,629.32-188,549.48-76,203.84

Finding the Fourth Proportional to 136,629.32, 188,549.48 and 76,203.84

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Solution

The fourth proportional to 136,629.32, 188,549.48 and 76,203.84 is: 105,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,629.32 : 188,549.48 = 76,203.84 : x
  2. Step 2: Convert to fraction form
    136,629.32/188,549.48 = 76,203.84/x
  3. Step 3: Cross multiply
    136,629.32x = 188,549.48 × 76,203.84
  4. Step 4: Simplify right side
    136,629.32x = 14,368,194,406.00
  5. Step 5: Solve for x
    x = 14,368,194,406.00/136,629.32
  6. Step 6: Final answer
    x = 105,161.87

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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.