Home / 231,154.86-318,994.90-129,182.03

Finding the Fourth Proportional to 231,154.86, 318,994.90 and 129,182.03

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Solution

The fourth proportional to 231,154.86, 318,994.90 and 129,182.03 is: 178,271.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,154.86 : 318,994.90 = 129,182.03 : x
  2. Step 2: Convert to fraction form
    231,154.86/318,994.90 = 129,182.03/x
  3. Step 3: Cross multiply
    231,154.86x = 318,994.90 × 129,182.03
  4. Step 4: Simplify right side
    231,154.86x = 41,208,407,389.70
  5. Step 5: Solve for x
    x = 41,208,407,389.70/231,154.86
  6. Step 6: Final answer
    x = 178,271.86

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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.