Home / 120,147.83-165,801.06-66,431.46

Finding the Fourth Proportional to 120,147.83, 165,801.06 and 66,431.46

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Solution

The fourth proportional to 120,147.83, 165,801.06 and 66,431.46 is: 91,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,147.83 : 165,801.06 = 66,431.46 : x
  2. Step 2: Convert to fraction form
    120,147.83/165,801.06 = 66,431.46/x
  3. Step 3: Cross multiply
    120,147.83x = 165,801.06 × 66,431.46
  4. Step 4: Simplify right side
    120,147.83x = 11,014,406,485.35
  5. Step 5: Solve for x
    x = 11,014,406,485.35/120,147.83
  6. Step 6: Final answer
    x = 91,673.79

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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.