Home / 261,979.43-361,531.62-142,747.43

Finding the Fourth Proportional to 261,979.43, 361,531.62 and 142,747.43

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Solution

The fourth proportional to 261,979.43, 361,531.62 and 142,747.43 is: 196,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,979.43 : 361,531.62 = 142,747.43 : x
  2. Step 2: Convert to fraction form
    261,979.43/361,531.62 = 142,747.43/x
  3. Step 3: Cross multiply
    261,979.43x = 361,531.62 × 142,747.43
  4. Step 4: Simplify right side
    261,979.43x = 51,607,709,618.74
  5. Step 5: Solve for x
    x = 51,607,709,618.74/261,979.43
  6. Step 6: Final answer
    x = 196,991.46

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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.