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Finding the Fourth Proportional to 101,449.44, 139,996.08 and 56,734.56

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Solution

The fourth proportional to 101,449.44, 139,996.08 and 56,734.56 is: 78,291.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,449.44 : 139,996.08 = 56,734.56 : x
  2. Step 2: Convert to fraction form
    101,449.44/139,996.08 = 56,734.56/x
  3. Step 3: Cross multiply
    101,449.44x = 139,996.08 × 56,734.56
  4. Step 4: Simplify right side
    101,449.44x = 7,942,616,000.52
  5. Step 5: Solve for x
    x = 7,942,616,000.52/101,449.44
  6. Step 6: Final answer
    x = 78,291.37

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1.5x scale

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.