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Finding the Fourth Proportional to 128,907.42, 193,314.82 and 44,644.90

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Solution

The fourth proportional to 128,907.42, 193,314.82 and 44,644.90 is: 66,951.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,907.42 : 193,314.82 = 44,644.90 : x
  2. Step 2: Convert to fraction form
    128,907.42/193,314.82 = 44,644.90/x
  3. Step 3: Cross multiply
    128,907.42x = 193,314.82 × 44,644.90
  4. Step 4: Simplify right side
    128,907.42x = 8,630,520,807.42
  5. Step 5: Solve for x
    x = 8,630,520,807.42/128,907.42
  6. Step 6: Final answer
    x = 66,951.31

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1.5x scale

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.