Home / 140,646.89-194,085.23-76,972.38

Finding the Fourth Proportional to 140,646.89, 194,085.23 and 76,972.38

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Solution

The fourth proportional to 140,646.89, 194,085.23 and 76,972.38 is: 106,217.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,646.89 : 194,085.23 = 76,972.38 : x
  2. Step 2: Convert to fraction form
    140,646.89/194,085.23 = 76,972.38/x
  3. Step 3: Cross multiply
    140,646.89x = 194,085.23 × 76,972.38
  4. Step 4: Simplify right side
    140,646.89x = 14,939,201,691.09
  5. Step 5: Solve for x
    x = 14,939,201,691.09/140,646.89
  6. Step 6: Final answer
    x = 106,217.79

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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.