Home / 137,624.43-189,923.31-76,371.90

Finding the Fourth Proportional to 137,624.43, 189,923.31 and 76,371.90

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Solution

The fourth proportional to 137,624.43, 189,923.31 and 76,371.90 is: 105,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,624.43 : 189,923.31 = 76,371.90 : x
  2. Step 2: Convert to fraction form
    137,624.43/189,923.31 = 76,371.90/x
  3. Step 3: Cross multiply
    137,624.43x = 189,923.31 × 76,371.90
  4. Step 4: Simplify right side
    137,624.43x = 14,504,804,038.99
  5. Step 5: Solve for x
    x = 14,504,804,038.99/137,624.43
  6. Step 6: Final answer
    x = 105,394.11

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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.