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Finding the Fourth Proportional to 108,857.76, 150,222.39 and 61,109.88

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Solution

The fourth proportional to 108,857.76, 150,222.39 and 61,109.88 is: 84,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,857.76 : 150,222.39 = 61,109.88 : x
  2. Step 2: Convert to fraction form
    108,857.76/150,222.39 = 61,109.88/x
  3. Step 3: Cross multiply
    108,857.76x = 150,222.39 × 61,109.88
  4. Step 4: Simplify right side
    108,857.76x = 9,180,072,226.21
  5. Step 5: Solve for x
    x = 9,180,072,226.21/108,857.76
  6. Step 6: Final answer
    x = 84,330.89

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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.