Home / 102,136.72-140,879.44-66,262.64

Finding the Fourth Proportional to 102,136.72, 140,879.44 and 66,262.64

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Solution

The fourth proportional to 102,136.72, 140,879.44 and 66,262.64 is: 91,397.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,136.72 : 140,879.44 = 66,262.64 : x
  2. Step 2: Convert to fraction form
    102,136.72/140,879.44 = 66,262.64/x
  3. Step 3: Cross multiply
    102,136.72x = 140,879.44 × 66,262.64
  4. Step 4: Simplify right side
    102,136.72x = 9,335,043,616.12
  5. Step 5: Solve for x
    x = 9,335,043,616.12/102,136.72
  6. Step 6: Final answer
    x = 91,397.53

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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.