Home / 231,164.72-318,991.20-130,543.28

Finding the Fourth Proportional to 231,164.72, 318,991.20 and 130,543.28

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Solution

The fourth proportional to 231,164.72, 318,991.20 and 130,543.28 is: 180,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,164.72 : 318,991.20 = 130,543.28 : x
  2. Step 2: Convert to fraction form
    231,164.72/318,991.20 = 130,543.28/x
  3. Step 3: Cross multiply
    231,164.72x = 318,991.20 × 130,543.28
  4. Step 4: Simplify right side
    231,164.72x = 41,642,157,539.14
  5. Step 5: Solve for x
    x = 41,642,157,539.14/231,164.72
  6. Step 6: Final answer
    x = 180,140.63

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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.