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Finding the Fourth Proportional to 112,241.64, 154,893.66 and 61,940.64

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Solution

The fourth proportional to 112,241.64, 154,893.66 and 61,940.64 is: 85,478.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,241.64 : 154,893.66 = 61,940.64 : x
  2. Step 2: Convert to fraction form
    112,241.64/154,893.66 = 61,940.64/x
  3. Step 3: Cross multiply
    112,241.64x = 154,893.66 × 61,940.64
  4. Step 4: Simplify right side
    112,241.64x = 9,594,212,432.34
  5. Step 5: Solve for x
    x = 9,594,212,432.34/112,241.64
  6. Step 6: Final answer
    x = 85,478.19

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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.