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Finding the Fourth Proportional to 155,224, 214,209.39 and 88,156

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Solution

The fourth proportional to 155,224, 214,209.39 and 88,156 is: 121,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,224 : 214,209.39 = 88,156 : x
  2. Step 2: Convert to fraction form
    155,224/214,209.39 = 88,156/x
  3. Step 3: Cross multiply
    155,224x = 214,209.39 × 88,156
  4. Step 4: Simplify right side
    155,224x = 18,883,842,984.84
  5. Step 5: Solve for x
    x = 18,883,842,984.84/155,224
  6. Step 6: Final answer
    x = 121,655.43

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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.