Home / 105,905.70-146,145.48-57,505.73

Finding the Fourth Proportional to 105,905.70, 146,145.48 and 57,505.73

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Solution

The fourth proportional to 105,905.70, 146,145.48 and 57,505.73 is: 79,355.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,905.70 : 146,145.48 = 57,505.73 : x
  2. Step 2: Convert to fraction form
    105,905.70/146,145.48 = 57,505.73/x
  3. Step 3: Cross multiply
    105,905.70x = 146,145.48 × 57,505.73
  4. Step 4: Simplify right side
    105,905.70x = 8,404,201,782.87
  5. Step 5: Solve for x
    x = 8,404,201,782.87/105,905.70
  6. Step 6: Final answer
    x = 79,355.52

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1.5x scale

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.