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Finding the Fourth Proportional to 191,855.80, 287,619.61 and 73,612

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Solution

The fourth proportional to 191,855.80, 287,619.61 and 73,612 is: 110,355.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,855.80 : 287,619.61 = 73,612 : x
  2. Step 2: Convert to fraction form
    191,855.80/287,619.61 = 73,612/x
  3. Step 3: Cross multiply
    191,855.80x = 287,619.61 × 73,612
  4. Step 4: Simplify right side
    191,855.80x = 21,172,254,731.32
  5. Step 5: Solve for x
    x = 21,172,254,731.32/191,855.80
  6. Step 6: Final answer
    x = 110,355.04

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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.