Home / 102,780.50-154,171.55-36,205.38

Finding the Fourth Proportional to 102,780.50, 154,171.55 and 36,205.38

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Solution

The fourth proportional to 102,780.50, 154,171.55 and 36,205.38 is: 54,308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,780.50 : 154,171.55 = 36,205.38 : x
  2. Step 2: Convert to fraction form
    102,780.50/154,171.55 = 36,205.38/x
  3. Step 3: Cross multiply
    102,780.50x = 154,171.55 × 36,205.38
  4. Step 4: Simplify right side
    102,780.50x = 5,581,839,643.45
  5. Step 5: Solve for x
    x = 5,581,839,643.45/102,780.50
  6. Step 6: Final answer
    x = 54,308.36

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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.