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Finding the Fourth Proportional to 120,344.88, 180,572.63 and 45,491.03

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Solution

The fourth proportional to 120,344.88, 180,572.63 and 45,491.03 is: 68,257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,344.88 : 180,572.63 = 45,491.03 : x
  2. Step 2: Convert to fraction form
    120,344.88/180,572.63 = 45,491.03/x
  3. Step 3: Cross multiply
    120,344.88x = 180,572.63 × 45,491.03
  4. Step 4: Simplify right side
    120,344.88x = 8,214,433,798.19
  5. Step 5: Solve for x
    x = 8,214,433,798.19/120,344.88
  6. Step 6: Final answer
    x = 68,257.44

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1.5x scale

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.