Home / 281,523.12-421,986.60-131,637.48

Finding the Fourth Proportional to 281,523.12, 421,986.60 and 131,637.48

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Solution

The fourth proportional to 281,523.12, 421,986.60 and 131,637.48 is: 197,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,523.12 : 421,986.60 = 131,637.48 : x
  2. Step 2: Convert to fraction form
    281,523.12/421,986.60 = 131,637.48/x
  3. Step 3: Cross multiply
    281,523.12x = 421,986.60 × 131,637.48
  4. Step 4: Simplify right side
    281,523.12x = 55,549,252,617.77
  5. Step 5: Solve for x
    x = 55,549,252,617.77/281,523.12
  6. Step 6: Final answer
    x = 197,316.84

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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.