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Finding the Fourth Proportional to 127,297.68, 191,000.52 and 68,118

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Solution

The fourth proportional to 127,297.68, 191,000.52 and 68,118 is: 102,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,297.68 : 191,000.52 = 68,118 : x
  2. Step 2: Convert to fraction form
    127,297.68/191,000.52 = 68,118/x
  3. Step 3: Cross multiply
    127,297.68x = 191,000.52 × 68,118
  4. Step 4: Simplify right side
    127,297.68x = 13,010,573,421.36
  5. Step 5: Solve for x
    x = 13,010,573,421.36/127,297.68
  6. Step 6: Final answer
    x = 102,205.90

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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.