Home / 345,732.21-518,478.33-121,087.65

Finding the Fourth Proportional to 345,732.21, 518,478.33 and 121,087.65

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Solution

The fourth proportional to 345,732.21, 518,478.33 and 121,087.65 is: 181,589.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,732.21 : 518,478.33 = 121,087.65 : x
  2. Step 2: Convert to fraction form
    345,732.21/518,478.33 = 121,087.65/x
  3. Step 3: Cross multiply
    345,732.21x = 518,478.33 × 121,087.65
  4. Step 4: Simplify right side
    345,732.21x = 62,781,322,555.62
  5. Step 5: Solve for x
    x = 62,781,322,555.62/345,732.21
  6. Step 6: Final answer
    x = 181,589.45

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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.