Home / 117,138.34-161,650.20-63,422.21

Finding the Fourth Proportional to 117,138.34, 161,650.20 and 63,422.21

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Solution

The fourth proportional to 117,138.34, 161,650.20 and 63,422.21 is: 87,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,138.34 : 161,650.20 = 63,422.21 : x
  2. Step 2: Convert to fraction form
    117,138.34/161,650.20 = 63,422.21/x
  3. Step 3: Cross multiply
    117,138.34x = 161,650.20 × 63,422.21
  4. Step 4: Simplify right side
    117,138.34x = 10,252,212,930.94
  5. Step 5: Solve for x
    x = 10,252,212,930.94/117,138.34
  6. Step 6: Final answer
    x = 87,522.27

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1.5x scale

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.