Home / 120,114.45-165,761.01-66,400.29

Finding the Fourth Proportional to 120,114.45, 165,761.01 and 66,400.29

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Solution

The fourth proportional to 120,114.45, 165,761.01 and 66,400.29 is: 91,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,114.45 : 165,761.01 = 66,400.29 : x
  2. Step 2: Convert to fraction form
    120,114.45/165,761.01 = 66,400.29/x
  3. Step 3: Cross multiply
    120,114.45x = 165,761.01 × 66,400.29
  4. Step 4: Simplify right side
    120,114.45x = 11,006,579,134.69
  5. Step 5: Solve for x
    x = 11,006,579,134.69/120,114.45
  6. Step 6: Final answer
    x = 91,634.10

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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.