Home / 258,195.12-356,342.68-145,017.88

Finding the Fourth Proportional to 258,195.12, 356,342.68 and 145,017.88

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Solution

The fourth proportional to 258,195.12, 356,342.68 and 145,017.88 is: 200,143.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,195.12 : 356,342.68 = 145,017.88 : x
  2. Step 2: Convert to fraction form
    258,195.12/356,342.68 = 145,017.88/x
  3. Step 3: Cross multiply
    258,195.12x = 356,342.68 × 145,017.88
  4. Step 4: Simplify right side
    258,195.12x = 51,676,060,007.12
  5. Step 5: Solve for x
    x = 51,676,060,007.12/258,195.12
  6. Step 6: Final answer
    x = 200,143.44

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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.