Home / 186,405.21-279,649.33-68,076.36

Finding the Fourth Proportional to 186,405.21, 279,649.33 and 68,076.36

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Solution

The fourth proportional to 186,405.21, 279,649.33 and 68,076.36 is: 102,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,405.21 : 279,649.33 = 68,076.36 : x
  2. Step 2: Convert to fraction form
    186,405.21/279,649.33 = 68,076.36/x
  3. Step 3: Cross multiply
    186,405.21x = 279,649.33 × 68,076.36
  4. Step 4: Simplify right side
    186,405.21x = 19,037,508,292.65
  5. Step 5: Solve for x
    x = 19,037,508,292.65/186,405.21
  6. Step 6: Final answer
    x = 102,129.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.