Home / 126,840.83-189,968.70-91,079.69

Finding the Fourth Proportional to 126,840.83, 189,968.70 and 91,079.69

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Solution

The fourth proportional to 126,840.83, 189,968.70 and 91,079.69 is: 136,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,840.83 : 189,968.70 = 91,079.69 : x
  2. Step 2: Convert to fraction form
    126,840.83/189,968.70 = 91,079.69/x
  3. Step 3: Cross multiply
    126,840.83x = 189,968.70 × 91,079.69
  4. Step 4: Simplify right side
    126,840.83x = 17,302,290,305.70
  5. Step 5: Solve for x
    x = 17,302,290,305.70/126,840.83
  6. Step 6: Final answer
    x = 136,409.47

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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.