Home / 101,971.26-140,720.20-56,653.42

Finding the Fourth Proportional to 101,971.26, 140,720.20 and 56,653.42

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Solution

The fourth proportional to 101,971.26, 140,720.20 and 56,653.42 is: 78,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,971.26 : 140,720.20 = 56,653.42 : x
  2. Step 2: Convert to fraction form
    101,971.26/140,720.20 = 56,653.42/x
  3. Step 3: Cross multiply
    101,971.26x = 140,720.20 × 56,653.42
  4. Step 4: Simplify right side
    101,971.26x = 7,972,280,593.08
  5. Step 5: Solve for x
    x = 7,972,280,593.08/101,971.26
  6. Step 6: Final answer
    x = 78,181.64

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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.