Home / 113,140.30-169,564.65-68,719.90

Finding the Fourth Proportional to 113,140.30, 169,564.65 and 68,719.90

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Solution

The fourth proportional to 113,140.30, 169,564.65 and 68,719.90 is: 102,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,140.30 : 169,564.65 = 68,719.90 : x
  2. Step 2: Convert to fraction form
    113,140.30/169,564.65 = 68,719.90/x
  3. Step 3: Cross multiply
    113,140.30x = 169,564.65 × 68,719.90
  4. Step 4: Simplify right side
    113,140.30x = 11,652,465,791.54
  5. Step 5: Solve for x
    x = 11,652,465,791.54/113,140.30
  6. Step 6: Final answer
    x = 102,991.29

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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.