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Finding the Fourth Proportional to 127,096, 190,644 and 43,990

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Solution

The fourth proportional to 127,096, 190,644 and 43,990 is: 65,985

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,096 : 190,644 = 43,990 : x
  2. Step 2: Convert to fraction form
    127,096/190,644 = 43,990/x
  3. Step 3: Cross multiply
    127,096x = 190,644 × 43,990
  4. Step 4: Simplify right side
    127,096x = 8,386,429,560
  5. Step 5: Solve for x
    x = 8,386,429,560/127,096
  6. Step 6: Final answer
    x = 65,985

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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.