Home / 231,881.57-319,995.84-128,522.34

Finding the Fourth Proportional to 231,881.57, 319,995.84 and 128,522.34

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Solution

The fourth proportional to 231,881.57, 319,995.84 and 128,522.34 is: 177,360.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,881.57 : 319,995.84 = 128,522.34 : x
  2. Step 2: Convert to fraction form
    231,881.57/319,995.84 = 128,522.34/x
  3. Step 3: Cross multiply
    231,881.57x = 319,995.84 × 128,522.34
  4. Step 4: Simplify right side
    231,881.57x = 41,126,614,147.07
  5. Step 5: Solve for x
    x = 41,126,614,147.07/231,881.57
  6. Step 6: Final answer
    x = 177,360.43

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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.