Home / 187,288.72-280,890.96-54,139.30

Finding the Fourth Proportional to 187,288.72, 280,890.96 and 54,139.30

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Solution

The fourth proportional to 187,288.72, 280,890.96 and 54,139.30 is: 81,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,288.72 : 280,890.96 = 54,139.30 : x
  2. Step 2: Convert to fraction form
    187,288.72/280,890.96 = 54,139.30/x
  3. Step 3: Cross multiply
    187,288.72x = 280,890.96 × 54,139.30
  4. Step 4: Simplify right side
    187,288.72x = 15,207,239,950.73
  5. Step 5: Solve for x
    x = 15,207,239,950.73/187,288.72
  6. Step 6: Final answer
    x = 81,196.77

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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.