Home / 102,399.20-141,311.53-57,080.06

Finding the Fourth Proportional to 102,399.20, 141,311.53 and 57,080.06

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Solution

The fourth proportional to 102,399.20, 141,311.53 and 57,080.06 is: 78,770.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,399.20 : 141,311.53 = 57,080.06 : x
  2. Step 2: Convert to fraction form
    102,399.20/141,311.53 = 57,080.06/x
  3. Step 3: Cross multiply
    102,399.20x = 141,311.53 × 57,080.06
  4. Step 4: Simplify right side
    102,399.20x = 8,066,070,611.09
  5. Step 5: Solve for x
    x = 8,066,070,611.09/102,399.20
  6. Step 6: Final answer
    x = 78,770.84

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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.