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Finding the Fourth Proportional to 187,296.63, 280,945.21 and 76,488.63

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Solution

The fourth proportional to 187,296.63, 280,945.21 and 76,488.63 is: 114,733.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,296.63 : 280,945.21 = 76,488.63 : x
  2. Step 2: Convert to fraction form
    187,296.63/280,945.21 = 76,488.63/x
  3. Step 3: Cross multiply
    187,296.63x = 280,945.21 × 76,488.63
  4. Step 4: Simplify right side
    187,296.63x = 21,489,114,217.96
  5. Step 5: Solve for x
    x = 21,489,114,217.96/187,296.63
  6. Step 6: Final answer
    x = 114,733.05

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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.