Home / 123,308.14-170,165.22-66,719.50

Finding the Fourth Proportional to 123,308.14, 170,165.22 and 66,719.50

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Solution

The fourth proportional to 123,308.14, 170,165.22 and 66,719.50 is: 92,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,308.14 : 170,165.22 = 66,719.50 : x
  2. Step 2: Convert to fraction form
    123,308.14/170,165.22 = 66,719.50/x
  3. Step 3: Cross multiply
    123,308.14x = 170,165.22 × 66,719.50
  4. Step 4: Simplify right side
    123,308.14x = 11,353,338,395.79
  5. Step 5: Solve for x
    x = 11,353,338,395.79/123,308.14
  6. Step 6: Final answer
    x = 92,072.90

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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.