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Finding the Fourth Proportional to 101,518.67, 140,049.27 and 65,720.22

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Solution

The fourth proportional to 101,518.67, 140,049.27 and 65,720.22 is: 90,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,518.67 : 140,049.27 = 65,720.22 : x
  2. Step 2: Convert to fraction form
    101,518.67/140,049.27 = 65,720.22/x
  3. Step 3: Cross multiply
    101,518.67x = 140,049.27 × 65,720.22
  4. Step 4: Simplify right side
    101,518.67x = 9,204,068,835.24
  5. Step 5: Solve for x
    x = 9,204,068,835.24/101,518.67
  6. Step 6: Final answer
    x = 90,663.81

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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.