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Finding the Fourth Proportional to 104,028.70, 156,043.05 and 91,975.90

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Solution

The fourth proportional to 104,028.70, 156,043.05 and 91,975.90 is: 137,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,028.70 : 156,043.05 = 91,975.90 : x
  2. Step 2: Convert to fraction form
    104,028.70/156,043.05 = 91,975.90/x
  3. Step 3: Cross multiply
    104,028.70x = 156,043.05 × 91,975.90
  4. Step 4: Simplify right side
    104,028.70x = 14,352,199,962.50
  5. Step 5: Solve for x
    x = 14,352,199,962.50/104,028.70
  6. Step 6: Final answer
    x = 137,963.85

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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.