Home / 126,820.80-189,842.40-74,073.60

Finding the Fourth Proportional to 126,820.80, 189,842.40 and 74,073.60

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Solution

The fourth proportional to 126,820.80, 189,842.40 and 74,073.60 is: 110,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,820.80 : 189,842.40 = 74,073.60 : x
  2. Step 2: Convert to fraction form
    126,820.80/189,842.40 = 74,073.60/x
  3. Step 3: Cross multiply
    126,820.80x = 189,842.40 × 74,073.60
  4. Step 4: Simplify right side
    126,820.80x = 14,062,310,000.64
  5. Step 5: Solve for x
    x = 14,062,310,000.64/126,820.80
  6. Step 6: Final answer
    x = 110,883.31

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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.