Home / 231,664.64-319,681.55-128,291.41

Finding the Fourth Proportional to 231,664.64, 319,681.55 and 128,291.41

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Solution

The fourth proportional to 231,664.64, 319,681.55 and 128,291.41 is: 177,033.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,664.64 : 319,681.55 = 128,291.41 : x
  2. Step 2: Convert to fraction form
    231,664.64/319,681.55 = 128,291.41/x
  3. Step 3: Cross multiply
    231,664.64x = 319,681.55 × 128,291.41
  4. Step 4: Simplify right side
    231,664.64x = 41,012,396,800.49
  5. Step 5: Solve for x
    x = 41,012,396,800.49/231,664.64
  6. Step 6: Final answer
    x = 177,033.48

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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.