Home / 170,290.14-255,286.70-70,387.98

Finding the Fourth Proportional to 170,290.14, 255,286.70 and 70,387.98

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Solution

The fourth proportional to 170,290.14, 255,286.70 and 70,387.98 is: 105,520.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,290.14 : 255,286.70 = 70,387.98 : x
  2. Step 2: Convert to fraction form
    170,290.14/255,286.70 = 70,387.98/x
  3. Step 3: Cross multiply
    170,290.14x = 255,286.70 × 70,387.98
  4. Step 4: Simplify right side
    170,290.14x = 17,969,115,133.87
  5. Step 5: Solve for x
    x = 17,969,115,133.87/170,290.14
  6. Step 6: Final answer
    x = 105,520.58

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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.