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Finding the Fourth Proportional to 191,367.52, 287,070.84 and 73,138.36

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Solution

The fourth proportional to 191,367.52, 287,070.84 and 73,138.36 is: 109,715.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,367.52 : 287,070.84 = 73,138.36 : x
  2. Step 2: Convert to fraction form
    191,367.52/287,070.84 = 73,138.36/x
  3. Step 3: Cross multiply
    191,367.52x = 287,070.84 × 73,138.36
  4. Step 4: Simplify right side
    191,367.52x = 20,995,890,441.42
  5. Step 5: Solve for x
    x = 20,995,890,441.42/191,367.52
  6. Step 6: Final answer
    x = 109,715.02

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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.