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Finding the Fourth Proportional to 108,898.94, 150,331.05 and 72,660.62

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Solution

The fourth proportional to 108,898.94, 150,331.05 and 72,660.62 is: 100,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,898.94 : 150,331.05 = 72,660.62 : x
  2. Step 2: Convert to fraction form
    108,898.94/150,331.05 = 72,660.62/x
  3. Step 3: Cross multiply
    108,898.94x = 150,331.05 × 72,660.62
  4. Step 4: Simplify right side
    108,898.94x = 10,923,147,298.25
  5. Step 5: Solve for x
    x = 10,923,147,298.25/108,898.94
  6. Step 6: Final answer
    x = 100,305.36

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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.