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Finding the Fourth Proportional to 140,578.68, 209,968.92 and 127,231.32

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Solution

The fourth proportional to 140,578.68, 209,968.92 and 127,231.32 is: 190,033.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,578.68 : 209,968.92 = 127,231.32 : x
  2. Step 2: Convert to fraction form
    140,578.68/209,968.92 = 127,231.32/x
  3. Step 3: Cross multiply
    140,578.68x = 209,968.92 × 127,231.32
  4. Step 4: Simplify right side
    140,578.68x = 26,714,622,850.57
  5. Step 5: Solve for x
    x = 26,714,622,850.57/140,578.68
  6. Step 6: Final answer
    x = 190,033.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.