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Finding the Fourth Proportional to 101,395.44, 139,966.92 and 65,586.96

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Solution

The fourth proportional to 101,395.44, 139,966.92 and 65,586.96 is: 90,536.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,395.44 : 139,966.92 = 65,586.96 : x
  2. Step 2: Convert to fraction form
    101,395.44/139,966.92 = 65,586.96/x
  3. Step 3: Cross multiply
    101,395.44x = 139,966.92 × 65,586.96
  4. Step 4: Simplify right side
    101,395.44x = 9,180,004,783.36
  5. Step 5: Solve for x
    x = 9,180,004,783.36/101,395.44
  6. Step 6: Final answer
    x = 90,536.66

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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.