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Finding the Fourth Proportional to 104,051.60, 156,120.60 and 66,653.84

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Solution

The fourth proportional to 104,051.60, 156,120.60 and 66,653.84 is: 100,008.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,051.60 : 156,120.60 = 66,653.84 : x
  2. Step 2: Convert to fraction form
    104,051.60/156,120.60 = 66,653.84/x
  3. Step 3: Cross multiply
    104,051.60x = 156,120.60 × 66,653.84
  4. Step 4: Simplify right side
    104,051.60x = 10,406,037,493.10
  5. Step 5: Solve for x
    x = 10,406,037,493.10/104,051.60
  6. Step 6: Final answer
    x = 100,008.43

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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.