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Finding the Fourth Proportional to 187,301.75, 280,952.90 and 76,493.75

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Solution

The fourth proportional to 187,301.75, 280,952.90 and 76,493.75 is: 114,740.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,301.75 : 280,952.90 = 76,493.75 : x
  2. Step 2: Convert to fraction form
    187,301.75/280,952.90 = 76,493.75/x
  3. Step 3: Cross multiply
    187,301.75x = 280,952.90 × 76,493.75
  4. Step 4: Simplify right side
    187,301.75x = 21,491,140,511.91
  5. Step 5: Solve for x
    x = 21,491,140,511.91/187,301.75
  6. Step 6: Final answer
    x = 114,740.74

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1.5x scale

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.