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Finding the Fourth Proportional to 168,210, 252,315.04 and 68,424.48

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Solution

The fourth proportional to 168,210, 252,315.04 and 68,424.48 is: 102,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,210 : 252,315.04 = 68,424.48 : x
  2. Step 2: Convert to fraction form
    168,210/252,315.04 = 68,424.48/x
  3. Step 3: Cross multiply
    168,210x = 252,315.04 × 68,424.48
  4. Step 4: Simplify right side
    168,210x = 17,264,525,408.18
  5. Step 5: Solve for x
    x = 17,264,525,408.18/168,210
  6. Step 6: Final answer
    x = 102,636.74

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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.