Home / 123,096.16-169,872.78-66,507.58

Finding the Fourth Proportional to 123,096.16, 169,872.78 and 66,507.58

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Solution

The fourth proportional to 123,096.16, 169,872.78 and 66,507.58 is: 91,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,096.16 : 169,872.78 = 66,507.58 : x
  2. Step 2: Convert to fraction form
    123,096.16/169,872.78 = 66,507.58/x
  3. Step 3: Cross multiply
    123,096.16x = 169,872.78 × 66,507.58
  4. Step 4: Simplify right side
    123,096.16x = 11,297,827,505.67
  5. Step 5: Solve for x
    x = 11,297,827,505.67/123,096.16
  6. Step 6: Final answer
    x = 91,780.50

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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.