Home / 345,621.36-518,665.46-120,983.65

Finding the Fourth Proportional to 345,621.36, 518,665.46 and 120,983.65

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Solution

The fourth proportional to 345,621.36, 518,665.46 and 120,983.65 is: 181,557.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,621.36 : 518,665.46 = 120,983.65 : x
  2. Step 2: Convert to fraction form
    345,621.36/518,665.46 = 120,983.65/x
  3. Step 3: Cross multiply
    345,621.36x = 518,665.46 × 120,983.65
  4. Step 4: Simplify right side
    345,621.36x = 62,750,039,874.81
  5. Step 5: Solve for x
    x = 62,750,039,874.81/345,621.36
  6. Step 6: Final answer
    x = 181,557.18

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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.