Home / 231,130.76-318,954.33-129,157.05

Finding the Fourth Proportional to 231,130.76, 318,954.33 and 129,157.05

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Solution

The fourth proportional to 231,130.76, 318,954.33 and 129,157.05 is: 178,233.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,130.76 : 318,954.33 = 129,157.05 : x
  2. Step 2: Convert to fraction form
    231,130.76/318,954.33 = 129,157.05/x
  3. Step 3: Cross multiply
    231,130.76x = 318,954.33 × 129,157.05
  4. Step 4: Simplify right side
    231,130.76x = 41,195,200,347.53
  5. Step 5: Solve for x
    x = 41,195,200,347.53/231,130.76
  6. Step 6: Final answer
    x = 178,233.31

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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.