Home / 126,491.32-189,643.17-76,559.58

Finding the Fourth Proportional to 126,491.32, 189,643.17 and 76,559.58

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Solution

The fourth proportional to 126,491.32, 189,643.17 and 76,559.58 is: 114,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,491.32 : 189,643.17 = 76,559.58 : x
  2. Step 2: Convert to fraction form
    126,491.32/189,643.17 = 76,559.58/x
  3. Step 3: Cross multiply
    126,491.32x = 189,643.17 × 76,559.58
  4. Step 4: Simplify right side
    126,491.32x = 14,519,001,732.17
  5. Step 5: Solve for x
    x = 14,519,001,732.17/126,491.32
  6. Step 6: Final answer
    x = 114,782.59

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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.