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Finding the Fourth Proportional to 101,914.56, 140,655.05 and 61,628.60

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Solution

The fourth proportional to 101,914.56, 140,655.05 and 61,628.60 is: 85,055.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,914.56 : 140,655.05 = 61,628.60 : x
  2. Step 2: Convert to fraction form
    101,914.56/140,655.05 = 61,628.60/x
  3. Step 3: Cross multiply
    101,914.56x = 140,655.05 × 61,628.60
  4. Step 4: Simplify right side
    101,914.56x = 8,668,372,803.01
  5. Step 5: Solve for x
    x = 8,668,372,803.01/101,914.56
  6. Step 6: Final answer
    x = 85,055.29

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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.