Home / 111,972.10-167,848.80-100,162.30

Finding the Fourth Proportional to 111,972.10, 167,848.80 and 100,162.30

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Solution

The fourth proportional to 111,972.10, 167,848.80 and 100,162.30 is: 150,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,972.10 : 167,848.80 = 100,162.30 : x
  2. Step 2: Convert to fraction form
    111,972.10/167,848.80 = 100,162.30/x
  3. Step 3: Cross multiply
    111,972.10x = 167,848.80 × 100,162.30
  4. Step 4: Simplify right side
    111,972.10x = 16,812,121,860.24
  5. Step 5: Solve for x
    x = 16,812,121,860.24/111,972.10
  6. Step 6: Final answer
    x = 150,145.63

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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.