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Finding the Fourth Proportional to 128,699.40, 193,074.84 and 44,462.64

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Solution

The fourth proportional to 128,699.40, 193,074.84 and 44,462.64 is: 66,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,699.40 : 193,074.84 = 44,462.64 : x
  2. Step 2: Convert to fraction form
    128,699.40/193,074.84 = 44,462.64/x
  3. Step 3: Cross multiply
    128,699.40x = 193,074.84 × 44,462.64
  4. Step 4: Simplify right side
    128,699.40x = 8,584,617,103.98
  5. Step 5: Solve for x
    x = 8,584,617,103.98/128,699.40
  6. Step 6: Final answer
    x = 66,702.85

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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.