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Finding the Fourth Proportional to 101,289.84, 151,739.60 and 56,781.44

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Solution

The fourth proportional to 101,289.84, 151,739.60 and 56,781.44 is: 85,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,289.84 : 151,739.60 = 56,781.44 : x
  2. Step 2: Convert to fraction form
    101,289.84/151,739.60 = 56,781.44/x
  3. Step 3: Cross multiply
    101,289.84x = 151,739.60 × 56,781.44
  4. Step 4: Simplify right side
    101,289.84x = 8,615,992,993.02
  5. Step 5: Solve for x
    x = 8,615,992,993.02/101,289.84
  6. Step 6: Final answer
    x = 85,062.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.