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Finding the Fourth Proportional to 108,321.73, 149,504.65 and 72,574.07

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Solution

The fourth proportional to 108,321.73, 149,504.65 and 72,574.07 is: 100,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,321.73 : 149,504.65 = 72,574.07 : x
  2. Step 2: Convert to fraction form
    108,321.73/149,504.65 = 72,574.07/x
  3. Step 3: Cross multiply
    108,321.73x = 149,504.65 × 72,574.07
  4. Step 4: Simplify right side
    108,321.73x = 10,850,160,005.47
  5. Step 5: Solve for x
    x = 10,850,160,005.47/108,321.73
  6. Step 6: Final answer
    x = 100,166.05

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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.