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Finding the Fourth Proportional to 140,922.40, 194,472.44 and 76,391.89

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Solution

The fourth proportional to 140,922.40, 194,472.44 and 76,391.89 is: 105,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,922.40 : 194,472.44 = 76,391.89 : x
  2. Step 2: Convert to fraction form
    140,922.40/194,472.44 = 76,391.89/x
  3. Step 3: Cross multiply
    140,922.40x = 194,472.44 × 76,391.89
  4. Step 4: Simplify right side
    140,922.40x = 14,856,117,244.51
  5. Step 5: Solve for x
    x = 14,856,117,244.51/140,922.40
  6. Step 6: Final answer
    x = 105,420.55

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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.