Home / 189,139.22-261,012.06-104,257.70

Finding the Fourth Proportional to 189,139.22, 261,012.06 and 104,257.70

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Solution

The fourth proportional to 189,139.22, 261,012.06 and 104,257.70 is: 143,875.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,139.22 : 261,012.06 = 104,257.70 : x
  2. Step 2: Convert to fraction form
    189,139.22/261,012.06 = 104,257.70/x
  3. Step 3: Cross multiply
    189,139.22x = 261,012.06 × 104,257.70
  4. Step 4: Simplify right side
    189,139.22x = 27,212,517,047.86
  5. Step 5: Solve for x
    x = 27,212,517,047.86/189,139.22
  6. Step 6: Final answer
    x = 143,875.59

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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.