Home / 115,935.40-173,672.70-66,629.80

Finding the Fourth Proportional to 115,935.40, 173,672.70 and 66,629.80

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Solution

The fourth proportional to 115,935.40, 173,672.70 and 66,629.80 is: 99,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,935.40 : 173,672.70 = 66,629.80 : x
  2. Step 2: Convert to fraction form
    115,935.40/173,672.70 = 66,629.80/x
  3. Step 3: Cross multiply
    115,935.40x = 173,672.70 × 66,629.80
  4. Step 4: Simplify right side
    115,935.40x = 11,571,777,266.46
  5. Step 5: Solve for x
    x = 11,571,777,266.46/115,935.40
  6. Step 6: Final answer
    x = 99,812.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.