Home / 100,579.74-138,799.46-55,256.74

Finding the Fourth Proportional to 100,579.74, 138,799.46 and 55,256.74

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Solution

The fourth proportional to 100,579.74, 138,799.46 and 55,256.74 is: 76,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,579.74 : 138,799.46 = 55,256.74 : x
  2. Step 2: Convert to fraction form
    100,579.74/138,799.46 = 55,256.74/x
  3. Step 3: Cross multiply
    100,579.74x = 138,799.46 × 55,256.74
  4. Step 4: Simplify right side
    100,579.74x = 7,669,605,673.36
  5. Step 5: Solve for x
    x = 7,669,605,673.36/100,579.74
  6. Step 6: Final answer
    x = 76,253.98

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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.