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Finding the Fourth Proportional to 123,471.60, 185,207.40 and 118,287.60

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Solution

The fourth proportional to 123,471.60, 185,207.40 and 118,287.60 is: 177,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,471.60 : 185,207.40 = 118,287.60 : x
  2. Step 2: Convert to fraction form
    123,471.60/185,207.40 = 118,287.60/x
  3. Step 3: Cross multiply
    123,471.60x = 185,207.40 × 118,287.60
  4. Step 4: Simplify right side
    123,471.60x = 21,907,738,848.24
  5. Step 5: Solve for x
    x = 21,907,738,848.24/123,471.60
  6. Step 6: Final answer
    x = 177,431.40

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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.