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Finding the Fourth Proportional to 104,893.92, 157,133.52 and 78,628.32

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Solution

The fourth proportional to 104,893.92, 157,133.52 and 78,628.32 is: 117,787.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,893.92 : 157,133.52 = 78,628.32 : x
  2. Step 2: Convert to fraction form
    104,893.92/157,133.52 = 78,628.32/x
  3. Step 3: Cross multiply
    104,893.92x = 157,133.52 × 78,628.32
  4. Step 4: Simplify right side
    104,893.92x = 12,355,144,693.29
  5. Step 5: Solve for x
    x = 12,355,144,693.29/104,893.92
  6. Step 6: Final answer
    x = 117,787.04

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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.