Home / 221,918.16-306,304.02-136,986.42

Finding the Fourth Proportional to 221,918.16, 306,304.02 and 136,986.42

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Solution

The fourth proportional to 221,918.16, 306,304.02 and 136,986.42 is: 189,076.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,918.16 : 306,304.02 = 136,986.42 : x
  2. Step 2: Convert to fraction form
    221,918.16/306,304.02 = 136,986.42/x
  3. Step 3: Cross multiply
    221,918.16x = 306,304.02 × 136,986.42
  4. Step 4: Simplify right side
    221,918.16x = 41,959,491,131.41
  5. Step 5: Solve for x
    x = 41,959,491,131.41/221,918.16
  6. Step 6: Final answer
    x = 189,076.42

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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.