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Finding the Fourth Proportional to 104,557.40, 156,576.90 and 83,821.40

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Solution

The fourth proportional to 104,557.40, 156,576.90 and 83,821.40 is: 125,524.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,557.40 : 156,576.90 = 83,821.40 : x
  2. Step 2: Convert to fraction form
    104,557.40/156,576.90 = 83,821.40/x
  3. Step 3: Cross multiply
    104,557.40x = 156,576.90 × 83,821.40
  4. Step 4: Simplify right side
    104,557.40x = 13,124,494,965.66
  5. Step 5: Solve for x
    x = 13,124,494,965.66/104,557.40
  6. Step 6: Final answer
    x = 125,524.30

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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.