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Finding the Fourth Proportional to 120,424.71, 165,676.75 and 117,103.21

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Solution

The fourth proportional to 120,424.71, 165,676.75 and 117,103.21 is: 161,107.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,424.71 : 165,676.75 = 117,103.21 : x
  2. Step 2: Convert to fraction form
    120,424.71/165,676.75 = 117,103.21/x
  3. Step 3: Cross multiply
    120,424.71x = 165,676.75 × 117,103.21
  4. Step 4: Simplify right side
    120,424.71x = 19,401,279,247.37
  5. Step 5: Solve for x
    x = 19,401,279,247.37/120,424.71
  6. Step 6: Final answer
    x = 161,107.13

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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.