Home / 108,172.38-162,342.26-70,722.30

Finding the Fourth Proportional to 108,172.38, 162,342.26 and 70,722.30

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Solution

The fourth proportional to 108,172.38, 162,342.26 and 70,722.30 is: 106,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,172.38 : 162,342.26 = 70,722.30 : x
  2. Step 2: Convert to fraction form
    108,172.38/162,342.26 = 70,722.30/x
  3. Step 3: Cross multiply
    108,172.38x = 162,342.26 × 70,722.30
  4. Step 4: Simplify right side
    108,172.38x = 11,481,218,014.40
  5. Step 5: Solve for x
    x = 11,481,218,014.40/108,172.38
  6. Step 6: Final answer
    x = 106,138.17

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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.