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Finding the Fourth Proportional to 120,384.88, 180,592.68 and 45,550.96

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Solution

The fourth proportional to 120,384.88, 180,592.68 and 45,550.96 is: 68,332.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,384.88 : 180,592.68 = 45,550.96 : x
  2. Step 2: Convert to fraction form
    120,384.88/180,592.68 = 45,550.96/x
  3. Step 3: Cross multiply
    120,384.88x = 180,592.68 × 45,550.96
  4. Step 4: Simplify right side
    120,384.88x = 8,226,169,942.97
  5. Step 5: Solve for x
    x = 8,226,169,942.97/120,384.88
  6. Step 6: Final answer
    x = 68,332.25

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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.