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Finding the Fourth Proportional to 101,530.56, 140,175.60 and 65,246.64

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Solution

The fourth proportional to 101,530.56, 140,175.60 and 65,246.64 is: 90,081.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,530.56 : 140,175.60 = 65,246.64 : x
  2. Step 2: Convert to fraction form
    101,530.56/140,175.60 = 65,246.64/x
  3. Step 3: Cross multiply
    101,530.56x = 140,175.60 × 65,246.64
  4. Step 4: Simplify right side
    101,530.56x = 9,145,986,909.98
  5. Step 5: Solve for x
    x = 9,145,986,909.98/101,530.56
  6. Step 6: Final answer
    x = 90,081.12

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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.