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Finding the Fourth Proportional to 125,997.12, 188,973.81 and 42,891.12

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Solution

The fourth proportional to 125,997.12, 188,973.81 and 42,891.12 is: 64,329.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,997.12 : 188,973.81 = 42,891.12 : x
  2. Step 2: Convert to fraction form
    125,997.12/188,973.81 = 42,891.12/x
  3. Step 3: Cross multiply
    125,997.12x = 188,973.81 × 42,891.12
  4. Step 4: Simplify right side
    125,997.12x = 8,105,298,361.57
  5. Step 5: Solve for x
    x = 8,105,298,361.57/125,997.12
  6. Step 6: Final answer
    x = 64,329.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.