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Finding the Fourth Proportional to 101,173.02, 139,618.74 and 55,851

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Solution

The fourth proportional to 101,173.02, 139,618.74 and 55,851 is: 77,074.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,173.02 : 139,618.74 = 55,851 : x
  2. Step 2: Convert to fraction form
    101,173.02/139,618.74 = 55,851/x
  3. Step 3: Cross multiply
    101,173.02x = 139,618.74 × 55,851
  4. Step 4: Simplify right side
    101,173.02x = 7,797,846,247.74
  5. Step 5: Solve for x
    x = 7,797,846,247.74/101,173.02
  6. Step 6: Final answer
    x = 77,074.36

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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.