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Finding the Fourth Proportional to 104,111, 156,230.75 and 40,920.04

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Solution

The fourth proportional to 104,111, 156,230.75 and 40,920.04 is: 61,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,111 : 156,230.75 = 40,920.04 : x
  2. Step 2: Convert to fraction form
    104,111/156,230.75 = 40,920.04/x
  3. Step 3: Cross multiply
    104,111x = 156,230.75 × 40,920.04
  4. Step 4: Simplify right side
    104,111x = 6,392,968,539.23
  5. Step 5: Solve for x
    x = 6,392,968,539.23/104,111
  6. Step 6: Final answer
    x = 61,405.31

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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.