Home / 231,177.72-319,009.14-130,556.28

Finding the Fourth Proportional to 231,177.72, 319,009.14 and 130,556.28

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Solution

The fourth proportional to 231,177.72, 319,009.14 and 130,556.28 is: 180,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,177.72 : 319,009.14 = 130,556.28 : x
  2. Step 2: Convert to fraction form
    231,177.72/319,009.14 = 130,556.28/x
  3. Step 3: Cross multiply
    231,177.72x = 319,009.14 × 130,556.28
  4. Step 4: Simplify right side
    231,177.72x = 41,648,646,604.40
  5. Step 5: Solve for x
    x = 41,648,646,604.40/231,177.72
  6. Step 6: Final answer
    x = 180,158.57

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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.