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Finding the Fourth Proportional to 119,380.56, 164,745.24 and 65,669.68

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Solution

The fourth proportional to 119,380.56, 164,745.24 and 65,669.68 is: 90,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,380.56 : 164,745.24 = 65,669.68 : x
  2. Step 2: Convert to fraction form
    119,380.56/164,745.24 = 65,669.68/x
  3. Step 3: Cross multiply
    119,380.56x = 164,745.24 × 65,669.68
  4. Step 4: Simplify right side
    119,380.56x = 10,818,767,192.32
  5. Step 5: Solve for x
    x = 10,818,767,192.32/119,380.56
  6. Step 6: Final answer
    x = 90,624.20

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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.