Home / 126,388.12-189,617.61-55,316.95

Finding the Fourth Proportional to 126,388.12, 189,617.61 and 55,316.95

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Solution

The fourth proportional to 126,388.12, 189,617.61 and 55,316.95 is: 82,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,388.12 : 189,617.61 = 55,316.95 : x
  2. Step 2: Convert to fraction form
    126,388.12/189,617.61 = 55,316.95/x
  3. Step 3: Cross multiply
    126,388.12x = 189,617.61 × 55,316.95
  4. Step 4: Simplify right side
    126,388.12x = 10,489,067,851.49
  5. Step 5: Solve for x
    x = 10,489,067,851.49/126,388.12
  6. Step 6: Final answer
    x = 82,990.93

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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.