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Finding the Fourth Proportional to 71,497.19, 107,246.39 and 18,189.21

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Solution

The fourth proportional to 71,497.19, 107,246.39 and 18,189.21 is: 27,283.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,497.19 : 107,246.39 = 18,189.21 : x
  2. Step 2: Convert to fraction form
    71,497.19/107,246.39 = 18,189.21/x
  3. Step 3: Cross multiply
    71,497.19x = 107,246.39 × 18,189.21
  4. Step 4: Simplify right side
    71,497.19x = 1,950,727,018.51
  5. Step 5: Solve for x
    x = 1,950,727,018.51/71,497.19
  6. Step 6: Final answer
    x = 27,283.97

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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.