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Finding the Fourth Proportional to 155,847.62, 215,070.69 and 84,227.46

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Solution

The fourth proportional to 155,847.62, 215,070.69 and 84,227.46 is: 116,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,847.62 : 215,070.69 = 84,227.46 : x
  2. Step 2: Convert to fraction form
    155,847.62/215,070.69 = 84,227.46/x
  3. Step 3: Cross multiply
    155,847.62x = 215,070.69 × 84,227.46
  4. Step 4: Simplify right side
    155,847.62x = 18,114,857,939.15
  5. Step 5: Solve for x
    x = 18,114,857,939.15/155,847.62
  6. Step 6: Final answer
    x = 116,234.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.