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Finding the Fourth Proportional to 108,729.44, 150,054.11 and 60,985.86

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Solution

The fourth proportional to 108,729.44, 150,054.11 and 60,985.86 is: 84,164.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.44 : 150,054.11 = 60,985.86 : x
  2. Step 2: Convert to fraction form
    108,729.44/150,054.11 = 60,985.86/x
  3. Step 3: Cross multiply
    108,729.44x = 150,054.11 × 60,985.86
  4. Step 4: Simplify right side
    108,729.44x = 9,151,178,944.88
  5. Step 5: Solve for x
    x = 9,151,178,944.88/108,729.44
  6. Step 6: Final answer
    x = 84,164.68

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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.