Home / 105,931.75-146,198.78-61,219.75

Finding the Fourth Proportional to 105,931.75, 146,198.78 and 61,219.75

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Solution

The fourth proportional to 105,931.75, 146,198.78 and 61,219.75 is: 84,490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,931.75 : 146,198.78 = 61,219.75 : x
  2. Step 2: Convert to fraction form
    105,931.75/146,198.78 = 61,219.75/x
  3. Step 3: Cross multiply
    105,931.75x = 146,198.78 × 61,219.75
  4. Step 4: Simplify right side
    105,931.75x = 8,950,252,761.91
  5. Step 5: Solve for x
    x = 8,950,252,761.91/105,931.75
  6. Step 6: Final answer
    x = 84,490.75

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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.