Home / 218,761.10-327,485.55-129,968.90

Finding the Fourth Proportional to 218,761.10, 327,485.55 and 129,968.90

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Solution

The fourth proportional to 218,761.10, 327,485.55 and 129,968.90 is: 194,563.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,761.10 : 327,485.55 = 129,968.90 : x
  2. Step 2: Convert to fraction form
    218,761.10/327,485.55 = 129,968.90/x
  3. Step 3: Cross multiply
    218,761.10x = 327,485.55 × 129,968.90
  4. Step 4: Simplify right side
    218,761.10x = 42,562,936,699.40
  5. Step 5: Solve for x
    x = 42,562,936,699.40/218,761.10
  6. Step 6: Final answer
    x = 194,563.55

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1.5x scale

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.