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Finding the Fourth Proportional to 111,893.28, 154,415.96 and 60,909.32

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Solution

The fourth proportional to 111,893.28, 154,415.96 and 60,909.32 is: 84,056.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,893.28 : 154,415.96 = 60,909.32 : x
  2. Step 2: Convert to fraction form
    111,893.28/154,415.96 = 60,909.32/x
  3. Step 3: Cross multiply
    111,893.28x = 154,415.96 × 60,909.32
  4. Step 4: Simplify right side
    111,893.28x = 9,405,370,044.12
  5. Step 5: Solve for x
    x = 9,405,370,044.12/111,893.28
  6. Step 6: Final answer
    x = 84,056.61

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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.