Home / 211,003.20-316,482.96-111,122.88

Finding the Fourth Proportional to 211,003.20, 316,482.96 and 111,122.88

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Solution

The fourth proportional to 211,003.20, 316,482.96 and 111,122.88 is: 166,672.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,003.20 : 316,482.96 = 111,122.88 : x
  2. Step 2: Convert to fraction form
    211,003.20/316,482.96 = 111,122.88/x
  3. Step 3: Cross multiply
    211,003.20x = 316,482.96 × 111,122.88
  4. Step 4: Simplify right side
    211,003.20x = 35,168,497,986.12
  5. Step 5: Solve for x
    x = 35,168,497,986.12/211,003.20
  6. Step 6: Final answer
    x = 166,672.82

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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.