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Finding the Fourth Proportional to 123,612.80, 185,419.20 and 122,300.60

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Solution

The fourth proportional to 123,612.80, 185,419.20 and 122,300.60 is: 183,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,612.80 : 185,419.20 = 122,300.60 : x
  2. Step 2: Convert to fraction form
    123,612.80/185,419.20 = 122,300.60/x
  3. Step 3: Cross multiply
    123,612.80x = 185,419.20 × 122,300.60
  4. Step 4: Simplify right side
    123,612.80x = 22,676,879,411.52
  5. Step 5: Solve for x
    x = 22,676,879,411.52/123,612.80
  6. Step 6: Final answer
    x = 183,450.90

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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.