Home / 231,176.72-319,007.76-130,555.28

Finding the Fourth Proportional to 231,176.72, 319,007.76 and 130,555.28

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Solution

The fourth proportional to 231,176.72, 319,007.76 and 130,555.28 is: 180,157.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,176.72 : 319,007.76 = 130,555.28 : x
  2. Step 2: Convert to fraction form
    231,176.72/319,007.76 = 130,555.28/x
  3. Step 3: Cross multiply
    231,176.72x = 319,007.76 × 130,555.28
  4. Step 4: Simplify right side
    231,176.72x = 41,648,147,428.97
  5. Step 5: Solve for x
    x = 41,648,147,428.97/231,176.72
  6. Step 6: Final answer
    x = 180,157.19

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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.