Home / 252,171.12-378,257.90-74,681.49

Finding the Fourth Proportional to 252,171.12, 378,257.90 and 74,681.49

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Solution

The fourth proportional to 252,171.12, 378,257.90 and 74,681.49 is: 112,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,171.12 : 378,257.90 = 74,681.49 : x
  2. Step 2: Convert to fraction form
    252,171.12/378,257.90 = 74,681.49/x
  3. Step 3: Cross multiply
    252,171.12x = 378,257.90 × 74,681.49
  4. Step 4: Simplify right side
    252,171.12x = 28,248,863,202.86
  5. Step 5: Solve for x
    x = 28,248,863,202.86/252,171.12
  6. Step 6: Final answer
    x = 112,022.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.