Home / 111,731.10-167,515.65-45,138.30

Finding the Fourth Proportional to 111,731.10, 167,515.65 and 45,138.30

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Solution

The fourth proportional to 111,731.10, 167,515.65 and 45,138.30 is: 67,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,731.10 : 167,515.65 = 45,138.30 : x
  2. Step 2: Convert to fraction form
    111,731.10/167,515.65 = 45,138.30/x
  3. Step 3: Cross multiply
    111,731.10x = 167,515.65 × 45,138.30
  4. Step 4: Simplify right side
    111,731.10x = 7,561,371,664.40
  5. Step 5: Solve for x
    x = 7,561,371,664.40/111,731.10
  6. Step 6: Final answer
    x = 67,674.73

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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.