Home / 172,470.39-258,705.66-77,589.75

Finding the Fourth Proportional to 172,470.39, 258,705.66 and 77,589.75

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Solution

The fourth proportional to 172,470.39, 258,705.66 and 77,589.75 is: 116,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,470.39 : 258,705.66 = 77,589.75 : x
  2. Step 2: Convert to fraction form
    172,470.39/258,705.66 = 77,589.75/x
  3. Step 3: Cross multiply
    172,470.39x = 258,705.66 × 77,589.75
  4. Step 4: Simplify right side
    172,470.39x = 20,072,907,482.99
  5. Step 5: Solve for x
    x = 20,072,907,482.99/172,470.39
  6. Step 6: Final answer
    x = 116,384.66

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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.