Home / 145,198.38-200,286.88-91,389.98

Finding the Fourth Proportional to 145,198.38, 200,286.88 and 91,389.98

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Solution

The fourth proportional to 145,198.38, 200,286.88 and 91,389.98 is: 126,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,198.38 : 200,286.88 = 91,389.98 : x
  2. Step 2: Convert to fraction form
    145,198.38/200,286.88 = 91,389.98/x
  3. Step 3: Cross multiply
    145,198.38x = 200,286.88 × 91,389.98
  4. Step 4: Simplify right side
    145,198.38x = 18,304,213,957.46
  5. Step 5: Solve for x
    x = 18,304,213,957.46/145,198.38
  6. Step 6: Final answer
    x = 126,063.49

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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.