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Finding the Fourth Proportional to 191,529.68, 287,251.32 and 73,158.80

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Solution

The fourth proportional to 191,529.68, 287,251.32 and 73,158.80 is: 109,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,529.68 : 287,251.32 = 73,158.80 : x
  2. Step 2: Convert to fraction form
    191,529.68/287,251.32 = 73,158.80/x
  3. Step 3: Cross multiply
    191,529.68x = 287,251.32 × 73,158.80
  4. Step 4: Simplify right side
    191,529.68x = 21,014,961,869.62
  5. Step 5: Solve for x
    x = 21,014,961,869.62/191,529.68
  6. Step 6: Final answer
    x = 109,721.70

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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.