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Finding the Fourth Proportional to 208,108.62, 312,176.61 and 73,156.32

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Solution

The fourth proportional to 208,108.62, 312,176.61 and 73,156.32 is: 109,739.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,108.62 : 312,176.61 = 73,156.32 : x
  2. Step 2: Convert to fraction form
    208,108.62/312,176.61 = 73,156.32/x
  3. Step 3: Cross multiply
    208,108.62x = 312,176.61 × 73,156.32
  4. Step 4: Simplify right side
    208,108.62x = 22,837,691,977.68
  5. Step 5: Solve for x
    x = 22,837,691,977.68/208,108.62
  6. Step 6: Final answer
    x = 109,739.29

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1.5x scale

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.