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Finding the Fourth Proportional to 191,560.76, 287,043.12 and 73,167.48

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Solution

The fourth proportional to 191,560.76, 287,043.12 and 73,167.48 is: 109,637.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,560.76 : 287,043.12 = 73,167.48 : x
  2. Step 2: Convert to fraction form
    191,560.76/287,043.12 = 73,167.48/x
  3. Step 3: Cross multiply
    191,560.76x = 287,043.12 × 73,167.48
  4. Step 4: Simplify right side
    191,560.76x = 21,002,221,741.74
  5. Step 5: Solve for x
    x = 21,002,221,741.74/191,560.76
  6. Step 6: Final answer
    x = 109,637.39

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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.