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Finding the Fourth Proportional to 122,184.80, 183,219.68 and 47,340

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Solution

The fourth proportional to 122,184.80, 183,219.68 and 47,340 is: 70,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,184.80 : 183,219.68 = 47,340 : x
  2. Step 2: Convert to fraction form
    122,184.80/183,219.68 = 47,340/x
  3. Step 3: Cross multiply
    122,184.80x = 183,219.68 × 47,340
  4. Step 4: Simplify right side
    122,184.80x = 8,673,619,651.20
  5. Step 5: Solve for x
    x = 8,673,619,651.20/122,184.80
  6. Step 6: Final answer
    x = 70,987.71

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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.