Home / 211,359.54-316,872.55-104,780.20

Finding the Fourth Proportional to 211,359.54, 316,872.55 and 104,780.20

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Solution

The fourth proportional to 211,359.54, 316,872.55 and 104,780.20 is: 157,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,359.54 : 316,872.55 = 104,780.20 : x
  2. Step 2: Convert to fraction form
    211,359.54/316,872.55 = 104,780.20/x
  3. Step 3: Cross multiply
    211,359.54x = 316,872.55 × 104,780.20
  4. Step 4: Simplify right side
    211,359.54x = 33,201,967,685.96
  5. Step 5: Solve for x
    x = 33,201,967,685.96/211,359.54
  6. Step 6: Final answer
    x = 157,087.62

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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.