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Finding the Fourth Proportional to 123,685.20, 185,527.80 and 122,907.60

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Solution

The fourth proportional to 123,685.20, 185,527.80 and 122,907.60 is: 184,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,685.20 : 185,527.80 = 122,907.60 : x
  2. Step 2: Convert to fraction form
    123,685.20/185,527.80 = 122,907.60/x
  3. Step 3: Cross multiply
    123,685.20x = 185,527.80 × 122,907.60
  4. Step 4: Simplify right side
    123,685.20x = 22,802,776,631.28
  5. Step 5: Solve for x
    x = 22,802,776,631.28/123,685.20
  6. Step 6: Final answer
    x = 184,361.40

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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.