Home / 231,865.65-319,994.89-129,889.49

Finding the Fourth Proportional to 231,865.65, 319,994.89 and 129,889.49

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Solution

The fourth proportional to 231,865.65, 319,994.89 and 129,889.49 is: 179,258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,865.65 : 319,994.89 = 129,889.49 : x
  2. Step 2: Convert to fraction form
    231,865.65/319,994.89 = 129,889.49/x
  3. Step 3: Cross multiply
    231,865.65x = 319,994.89 × 129,889.49
  4. Step 4: Simplify right side
    231,865.65x = 41,563,971,140.01
  5. Step 5: Solve for x
    x = 41,563,971,140.01/231,865.65
  6. Step 6: Final answer
    x = 179,258.86

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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.