Home / 137,564.70-189,917.94-105,239.76

Finding the Fourth Proportional to 137,564.70, 189,917.94 and 105,239.76

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Solution

The fourth proportional to 137,564.70, 189,917.94 and 105,239.76 is: 145,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,564.70 : 189,917.94 = 105,239.76 : x
  2. Step 2: Convert to fraction form
    137,564.70/189,917.94 = 105,239.76/x
  3. Step 3: Cross multiply
    137,564.70x = 189,917.94 × 105,239.76
  4. Step 4: Simplify right side
    137,564.70x = 19,986,918,425.29
  5. Step 5: Solve for x
    x = 19,986,918,425.29/137,564.70
  6. Step 6: Final answer
    x = 145,291.04

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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.