Home / 100,416.52-138,570.12-55,093.48

Finding the Fourth Proportional to 100,416.52, 138,570.12 and 55,093.48

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Solution

The fourth proportional to 100,416.52, 138,570.12 and 55,093.48 is: 76,026.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,416.52 : 138,570.12 = 55,093.48 : x
  2. Step 2: Convert to fraction form
    100,416.52/138,570.12 = 55,093.48/x
  3. Step 3: Cross multiply
    100,416.52x = 138,570.12 × 55,093.48
  4. Step 4: Simplify right side
    100,416.52x = 7,634,310,134.82
  5. Step 5: Solve for x
    x = 7,634,310,134.82/100,416.52
  6. Step 6: Final answer
    x = 76,026.44

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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.