Home / 120,127.05-165,778.75-66,415.49

Finding the Fourth Proportional to 120,127.05, 165,778.75 and 66,415.49

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Solution

The fourth proportional to 120,127.05, 165,778.75 and 66,415.49 is: 91,655.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.05 : 165,778.75 = 66,415.49 : x
  2. Step 2: Convert to fraction form
    120,127.05/165,778.75 = 66,415.49/x
  3. Step 3: Cross multiply
    120,127.05x = 165,778.75 × 66,415.49
  4. Step 4: Simplify right side
    120,127.05x = 11,010,277,721.14
  5. Step 5: Solve for x
    x = 11,010,277,721.14/120,127.05
  6. Step 6: Final answer
    x = 91,655.27

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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.