Home / 261,727.20-361,081.80-154,126.80

Finding the Fourth Proportional to 261,727.20, 361,081.80 and 154,126.80

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Solution

The fourth proportional to 261,727.20, 361,081.80 and 154,126.80 is: 212,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,727.20 : 361,081.80 = 154,126.80 : x
  2. Step 2: Convert to fraction form
    261,727.20/361,081.80 = 154,126.80/x
  3. Step 3: Cross multiply
    261,727.20x = 361,081.80 × 154,126.80
  4. Step 4: Simplify right side
    261,727.20x = 55,652,382,372.24
  5. Step 5: Solve for x
    x = 55,652,382,372.24/261,727.20
  6. Step 6: Final answer
    x = 212,635.07

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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.