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Finding the Fourth Proportional to 108,236.54, 149,431.02 and 67,984.76

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Solution

The fourth proportional to 108,236.54, 149,431.02 and 67,984.76 is: 93,859.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,236.54 : 149,431.02 = 67,984.76 : x
  2. Step 2: Convert to fraction form
    108,236.54/149,431.02 = 67,984.76/x
  3. Step 3: Cross multiply
    108,236.54x = 149,431.02 × 67,984.76
  4. Step 4: Simplify right side
    108,236.54x = 10,159,032,031.26
  5. Step 5: Solve for x
    x = 10,159,032,031.26/108,236.54
  6. Step 6: Final answer
    x = 93,859.54

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Double scale
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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.