Home / 261,002.10-391,539.60-111,241.20

Finding the Fourth Proportional to 261,002.10, 391,539.60 and 111,241.20

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Solution

The fourth proportional to 261,002.10, 391,539.60 and 111,241.20 is: 166,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,002.10 : 391,539.60 = 111,241.20 : x
  2. Step 2: Convert to fraction form
    261,002.10/391,539.60 = 111,241.20/x
  3. Step 3: Cross multiply
    261,002.10x = 391,539.60 × 111,241.20
  4. Step 4: Simplify right side
    261,002.10x = 43,555,334,951.52
  5. Step 5: Solve for x
    x = 43,555,334,951.52/261,002.10
  6. Step 6: Final answer
    x = 166,877.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.