Home / 120,146.93-165,796.08-66,428.72

Finding the Fourth Proportional to 120,146.93, 165,796.08 and 66,428.72

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Solution

The fourth proportional to 120,146.93, 165,796.08 and 66,428.72 is: 91,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,146.93 : 165,796.08 = 66,428.72 : x
  2. Step 2: Convert to fraction form
    120,146.93/165,796.08 = 66,428.72/x
  3. Step 3: Cross multiply
    120,146.93x = 165,796.08 × 66,428.72
  4. Step 4: Simplify right side
    120,146.93x = 11,013,621,540.80
  5. Step 5: Solve for x
    x = 11,013,621,540.80/120,146.93
  6. Step 6: Final answer
    x = 91,667.94

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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.