Home / 151,618.56-209,168.64-91,173.12

Finding the Fourth Proportional to 151,618.56, 209,168.64 and 91,173.12

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Solution

The fourth proportional to 151,618.56, 209,168.64 and 91,173.12 is: 125,779.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,618.56 : 209,168.64 = 91,173.12 : x
  2. Step 2: Convert to fraction form
    151,618.56/209,168.64 = 91,173.12/x
  3. Step 3: Cross multiply
    151,618.56x = 209,168.64 × 91,173.12
  4. Step 4: Simplify right side
    151,618.56x = 19,070,557,514.96
  5. Step 5: Solve for x
    x = 19,070,557,514.96/151,618.56
  6. Step 6: Final answer
    x = 125,779.84

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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.