Home / 100,592.47-138,820.60-55,273.27

Finding the Fourth Proportional to 100,592.47, 138,820.60 and 55,273.27

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Solution

The fourth proportional to 100,592.47, 138,820.60 and 55,273.27 is: 76,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,592.47 : 138,820.60 = 55,273.27 : x
  2. Step 2: Convert to fraction form
    100,592.47/138,820.60 = 55,273.27/x
  3. Step 3: Cross multiply
    100,592.47x = 138,820.60 × 55,273.27
  4. Step 4: Simplify right side
    100,592.47x = 7,673,068,505.36
  5. Step 5: Solve for x
    x = 7,673,068,505.36/100,592.47
  6. Step 6: Final answer
    x = 76,278.76

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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.