Home / 137,622.49-189,909.28-76,371.97

Finding the Fourth Proportional to 137,622.49, 189,909.28 and 76,371.97

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Solution

The fourth proportional to 137,622.49, 189,909.28 and 76,371.97 is: 105,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,622.49 : 189,909.28 = 76,371.97 : x
  2. Step 2: Convert to fraction form
    137,622.49/189,909.28 = 76,371.97/x
  3. Step 3: Cross multiply
    137,622.49x = 189,909.28 × 76,371.97
  4. Step 4: Simplify right side
    137,622.49x = 14,503,745,169.18
  5. Step 5: Solve for x
    x = 14,503,745,169.18/137,622.49
  6. Step 6: Final answer
    x = 105,387.90

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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.