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Finding the Fourth Proportional to 70,757.66, 106,142.70 and 18,167.06

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Solution

The fourth proportional to 70,757.66, 106,142.70 and 18,167.06 is: 27,252.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.66 : 106,142.70 = 18,167.06 : x
  2. Step 2: Convert to fraction form
    70,757.66/106,142.70 = 18,167.06/x
  3. Step 3: Cross multiply
    70,757.66x = 106,142.70 × 18,167.06
  4. Step 4: Simplify right side
    70,757.66x = 1,928,300,799.46
  5. Step 5: Solve for x
    x = 1,928,300,799.46/70,757.66
  6. Step 6: Final answer
    x = 27,252.18

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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.