Home / 120,147.03-165,796.28-66,428.51

Finding the Fourth Proportional to 120,147.03, 165,796.28 and 66,428.51

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Solution

The fourth proportional to 120,147.03, 165,796.28 and 66,428.51 is: 91,667.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,147.03 : 165,796.28 = 66,428.51 : x
  2. Step 2: Convert to fraction form
    120,147.03/165,796.28 = 66,428.51/x
  3. Step 3: Cross multiply
    120,147.03x = 165,796.28 × 66,428.51
  4. Step 4: Simplify right side
    120,147.03x = 11,013,599,388.28
  5. Step 5: Solve for x
    x = 11,013,599,388.28/120,147.03
  6. Step 6: Final answer
    x = 91,667.68

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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.