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Finding the Fourth Proportional to 140,563.75, 210,845.83 and 57,457.75

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Solution

The fourth proportional to 140,563.75, 210,845.83 and 57,457.75 is: 86,186.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,563.75 : 210,845.83 = 57,457.75 : x
  2. Step 2: Convert to fraction form
    140,563.75/210,845.83 = 57,457.75/x
  3. Step 3: Cross multiply
    140,563.75x = 210,845.83 × 57,457.75
  4. Step 4: Simplify right side
    140,563.75x = 12,114,726,988.68
  5. Step 5: Solve for x
    x = 12,114,726,988.68/140,563.75
  6. Step 6: Final answer
    x = 86,186.71

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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.