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Finding the Fourth Proportional to 155,847.68, 215,069.84 and 84,227.60

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Solution

The fourth proportional to 155,847.68, 215,069.84 and 84,227.60 is: 116,234.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,847.68 : 215,069.84 = 84,227.60 : x
  2. Step 2: Convert to fraction form
    155,847.68/215,069.84 = 84,227.60/x
  3. Step 3: Cross multiply
    155,847.68x = 215,069.84 × 84,227.60
  4. Step 4: Simplify right side
    155,847.68x = 18,114,816,455.58
  5. Step 5: Solve for x
    x = 18,114,816,455.58/155,847.68
  6. Step 6: Final answer
    x = 116,234.11

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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.