Home / 135,317.21-186,735.17-74,887.89

Finding the Fourth Proportional to 135,317.21, 186,735.17 and 74,887.89

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Solution

The fourth proportional to 135,317.21, 186,735.17 and 74,887.89 is: 103,343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,317.21 : 186,735.17 = 74,887.89 : x
  2. Step 2: Convert to fraction form
    135,317.21/186,735.17 = 74,887.89/x
  3. Step 3: Cross multiply
    135,317.21x = 186,735.17 × 74,887.89
  4. Step 4: Simplify right side
    135,317.21x = 13,984,203,407.44
  5. Step 5: Solve for x
    x = 13,984,203,407.44/135,317.21
  6. Step 6: Final answer
    x = 103,343.87

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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.