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Finding the Fourth Proportional to 108,989.75, 150,404.55 and 61,251.19

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Solution

The fourth proportional to 108,989.75, 150,404.55 and 61,251.19 is: 84,525.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,989.75 : 150,404.55 = 61,251.19 : x
  2. Step 2: Convert to fraction form
    108,989.75/150,404.55 = 61,251.19/x
  3. Step 3: Cross multiply
    108,989.75x = 150,404.55 × 61,251.19
  4. Step 4: Simplify right side
    108,989.75x = 9,212,457,063.21
  5. Step 5: Solve for x
    x = 9,212,457,063.21/108,989.75
  6. Step 6: Final answer
    x = 84,525.90

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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.