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Finding the Fourth Proportional to 120,341.60, 180,462.72 and 45,449

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Solution

The fourth proportional to 120,341.60, 180,462.72 and 45,449 is: 68,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,341.60 : 180,462.72 = 45,449 : x
  2. Step 2: Convert to fraction form
    120,341.60/180,462.72 = 45,449/x
  3. Step 3: Cross multiply
    120,341.60x = 180,462.72 × 45,449
  4. Step 4: Simplify right side
    120,341.60x = 8,201,850,161.28
  5. Step 5: Solve for x
    x = 8,201,850,161.28/120,341.60
  6. Step 6: Final answer
    x = 68,154.74

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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.