Home / 210,351.43-315,455.61-68,158.16

Finding the Fourth Proportional to 210,351.43, 315,455.61 and 68,158.16

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Solution

The fourth proportional to 210,351.43, 315,455.61 and 68,158.16 is: 102,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,351.43 : 315,455.61 = 68,158.16 : x
  2. Step 2: Convert to fraction form
    210,351.43/315,455.61 = 68,158.16/x
  3. Step 3: Cross multiply
    210,351.43x = 315,455.61 × 68,158.16
  4. Step 4: Simplify right side
    210,351.43x = 21,500,872,021.21
  5. Step 5: Solve for x
    x = 21,500,872,021.21/210,351.43
  6. Step 6: Final answer
    x = 102,214.05

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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.