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Finding the Fourth Proportional to 191,403.72, 287,124.70 and 73,174.52

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Solution

The fourth proportional to 191,403.72, 287,124.70 and 73,174.52 is: 109,769.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,403.72 : 287,124.70 = 73,174.52 : x
  2. Step 2: Convert to fraction form
    191,403.72/287,124.70 = 73,174.52/x
  3. Step 3: Cross multiply
    191,403.72x = 287,124.70 × 73,174.52
  4. Step 4: Simplify right side
    191,403.72x = 21,010,212,102.64
  5. Step 5: Solve for x
    x = 21,010,212,102.64/191,403.72
  6. Step 6: Final answer
    x = 109,769.09

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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.