Home / 154,270.12-212,829.96-100,535.56

Finding the Fourth Proportional to 154,270.12, 212,829.96 and 100,535.56

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Solution

The fourth proportional to 154,270.12, 212,829.96 and 100,535.56 is: 138,698.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,270.12 : 212,829.96 = 100,535.56 : x
  2. Step 2: Convert to fraction form
    154,270.12/212,829.96 = 100,535.56/x
  3. Step 3: Cross multiply
    154,270.12x = 212,829.96 × 100,535.56
  4. Step 4: Simplify right side
    154,270.12x = 21,396,979,213.38
  5. Step 5: Solve for x
    x = 21,396,979,213.38/154,270.12
  6. Step 6: Final answer
    x = 138,698.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.