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Finding the Fourth Proportional to 140,794.88, 194,242.56 and 90,521.60

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Solution

The fourth proportional to 140,794.88, 194,242.56 and 90,521.60 is: 124,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,794.88 : 194,242.56 = 90,521.60 : x
  2. Step 2: Convert to fraction form
    140,794.88/194,242.56 = 90,521.60/x
  3. Step 3: Cross multiply
    140,794.88x = 194,242.56 × 90,521.60
  4. Step 4: Simplify right side
    140,794.88x = 17,583,147,319.30
  5. Step 5: Solve for x
    x = 17,583,147,319.30/140,794.88
  6. Step 6: Final answer
    x = 124,884.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.