Home / 115,389.92-172,982.28-45,318.08

Finding the Fourth Proportional to 115,389.92, 172,982.28 and 45,318.08

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Solution

The fourth proportional to 115,389.92, 172,982.28 and 45,318.08 is: 67,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,389.92 : 172,982.28 = 45,318.08 : x
  2. Step 2: Convert to fraction form
    115,389.92/172,982.28 = 45,318.08/x
  3. Step 3: Cross multiply
    115,389.92x = 172,982.28 × 45,318.08
  4. Step 4: Simplify right side
    115,389.92x = 7,839,224,803.62
  5. Step 5: Solve for x
    x = 7,839,224,803.62/115,389.92
  6. Step 6: Final answer
    x = 67,936.83

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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.