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Finding the Fourth Proportional to 162,401.20, 243,310.20 and 139,073.20

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Solution

The fourth proportional to 162,401.20, 243,310.20 and 139,073.20 is: 208,360.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,401.20 : 243,310.20 = 139,073.20 : x
  2. Step 2: Convert to fraction form
    162,401.20/243,310.20 = 139,073.20/x
  3. Step 3: Cross multiply
    162,401.20x = 243,310.20 × 139,073.20
  4. Step 4: Simplify right side
    162,401.20x = 33,837,928,106.64
  5. Step 5: Solve for x
    x = 33,837,928,106.64/162,401.20
  6. Step 6: Final answer
    x = 208,360.09

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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.