Home / 127,631.27-191,446.94-57,428.57

Finding the Fourth Proportional to 127,631.27, 191,446.94 and 57,428.57

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Solution

The fourth proportional to 127,631.27, 191,446.94 and 57,428.57 is: 86,142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,631.27 : 191,446.94 = 57,428.57 : x
  2. Step 2: Convert to fraction form
    127,631.27/191,446.94 = 57,428.57/x
  3. Step 3: Cross multiply
    127,631.27x = 191,446.94 × 57,428.57
  4. Step 4: Simplify right side
    127,631.27x = 10,994,523,181.41
  5. Step 5: Solve for x
    x = 10,994,523,181.41/127,631.27
  6. Step 6: Final answer
    x = 86,142.87

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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.