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Finding the Fourth Proportional to 164,492.20, 247,029.90 and 127,143.10

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Solution

The fourth proportional to 164,492.20, 247,029.90 and 127,143.10 is: 190,940.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,492.20 : 247,029.90 = 127,143.10 : x
  2. Step 2: Convert to fraction form
    164,492.20/247,029.90 = 127,143.10/x
  3. Step 3: Cross multiply
    164,492.20x = 247,029.90 × 127,143.10
  4. Step 4: Simplify right side
    164,492.20x = 31,408,147,278.69
  5. Step 5: Solve for x
    x = 31,408,147,278.69/164,492.20
  6. Step 6: Final answer
    x = 190,940.04

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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.