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Finding the Fourth Proportional to 127,397.60, 190,833.60 and 74,647.20

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Solution

The fourth proportional to 127,397.60, 190,833.60 and 74,647.20 is: 111,816.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,397.60 : 190,833.60 = 74,647.20 : x
  2. Step 2: Convert to fraction form
    127,397.60/190,833.60 = 74,647.20/x
  3. Step 3: Cross multiply
    127,397.60x = 190,833.60 × 74,647.20
  4. Step 4: Simplify right side
    127,397.60x = 14,245,193,905.92
  5. Step 5: Solve for x
    x = 14,245,193,905.92/127,397.60
  6. Step 6: Final answer
    x = 111,816.82

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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.