Home / 120,125.82-165,778.47-66,410.94

Finding the Fourth Proportional to 120,125.82, 165,778.47 and 66,410.94

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Solution

The fourth proportional to 120,125.82, 165,778.47 and 66,410.94 is: 91,649.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,125.82 : 165,778.47 = 66,410.94 : x
  2. Step 2: Convert to fraction form
    120,125.82/165,778.47 = 66,410.94/x
  3. Step 3: Cross multiply
    120,125.82x = 165,778.47 × 66,410.94
  4. Step 4: Simplify right side
    120,125.82x = 11,009,504,024.46
  5. Step 5: Solve for x
    x = 11,009,504,024.46/120,125.82
  6. Step 6: Final answer
    x = 91,649.77

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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.