Home / 123,027.45-169,777.86-66,438.81

Finding the Fourth Proportional to 123,027.45, 169,777.86 and 66,438.81

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Solution

The fourth proportional to 123,027.45, 169,777.86 and 66,438.81 is: 91,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,027.45 : 169,777.86 = 66,438.81 : x
  2. Step 2: Convert to fraction form
    123,027.45/169,777.86 = 66,438.81/x
  3. Step 3: Cross multiply
    123,027.45x = 169,777.86 × 66,438.81
  4. Step 4: Simplify right side
    123,027.45x = 11,279,838,982.75
  5. Step 5: Solve for x
    x = 11,279,838,982.75/123,027.45
  6. Step 6: Final answer
    x = 91,685.55

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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.