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Finding the Fourth Proportional to 104,595.90, 156,806.01 and 72,912.84

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Solution

The fourth proportional to 104,595.90, 156,806.01 and 72,912.84 is: 109,308.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,595.90 : 156,806.01 = 72,912.84 : x
  2. Step 2: Convert to fraction form
    104,595.90/156,806.01 = 72,912.84/x
  3. Step 3: Cross multiply
    104,595.90x = 156,806.01 × 72,912.84
  4. Step 4: Simplify right side
    104,595.90x = 11,433,171,518.17
  5. Step 5: Solve for x
    x = 11,433,171,518.17/104,595.90
  6. Step 6: Final answer
    x = 109,308.03

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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.