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Finding the Fourth Proportional to 127,291.80, 190,865.70 and 48,408.60

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Solution

The fourth proportional to 127,291.80, 190,865.70 and 48,408.60 is: 72,585.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,291.80 : 190,865.70 = 48,408.60 : x
  2. Step 2: Convert to fraction form
    127,291.80/190,865.70 = 48,408.60/x
  3. Step 3: Cross multiply
    127,291.80x = 190,865.70 × 48,408.60
  4. Step 4: Simplify right side
    127,291.80x = 9,239,541,325.02
  5. Step 5: Solve for x
    x = 9,239,541,325.02/127,291.80
  6. Step 6: Final answer
    x = 72,585.52

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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.