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Finding the Fourth Proportional to 108,489.42, 149,721.03 and 60,739.92

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Solution

The fourth proportional to 108,489.42, 149,721.03 and 60,739.92 is: 83,824.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,489.42 : 149,721.03 = 60,739.92 : x
  2. Step 2: Convert to fraction form
    108,489.42/149,721.03 = 60,739.92/x
  3. Step 3: Cross multiply
    108,489.42x = 149,721.03 × 60,739.92
  4. Step 4: Simplify right side
    108,489.42x = 9,094,043,384.52
  5. Step 5: Solve for x
    x = 9,094,043,384.52/108,489.42
  6. Step 6: Final answer
    x = 83,824.24

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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.