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Finding the Fourth Proportional to 115,891.92, 172,969.05 and 108,325.12

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Solution

The fourth proportional to 115,891.92, 172,969.05 and 108,325.12 is: 161,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,891.92 : 172,969.05 = 108,325.12 : x
  2. Step 2: Convert to fraction form
    115,891.92/172,969.05 = 108,325.12/x
  3. Step 3: Cross multiply
    115,891.92x = 172,969.05 × 108,325.12
  4. Step 4: Simplify right side
    115,891.92x = 18,736,893,097.54
  5. Step 5: Solve for x
    x = 18,736,893,097.54/115,891.92
  6. Step 6: Final answer
    x = 161,675.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.