Home / 113,129.87-156,121.27-62,147.25

Finding the Fourth Proportional to 113,129.87, 156,121.27 and 62,147.25

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Solution

The fourth proportional to 113,129.87, 156,121.27 and 62,147.25 is: 85,764.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,129.87 : 156,121.27 = 62,147.25 : x
  2. Step 2: Convert to fraction form
    113,129.87/156,121.27 = 62,147.25/x
  3. Step 3: Cross multiply
    113,129.87x = 156,121.27 × 62,147.25
  4. Step 4: Simplify right side
    113,129.87x = 9,702,507,791.22
  5. Step 5: Solve for x
    x = 9,702,507,791.22/113,129.87
  6. Step 6: Final answer
    x = 85,764.34

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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.