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Finding the Fourth Proportional to 191,578.82, 287,385.54 and 73,251.18

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Solution

The fourth proportional to 191,578.82, 287,385.54 and 73,251.18 is: 109,883.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,578.82 : 287,385.54 = 73,251.18 : x
  2. Step 2: Convert to fraction form
    191,578.82/287,385.54 = 73,251.18/x
  3. Step 3: Cross multiply
    191,578.82x = 287,385.54 × 73,251.18
  4. Step 4: Simplify right side
    191,578.82x = 21,051,329,919.94
  5. Step 5: Solve for x
    x = 21,051,329,919.94/191,578.82
  6. Step 6: Final answer
    x = 109,883.39

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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.