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Finding the Fourth Proportional to 127,999.92, 191,722.56 and 92,862

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Solution

The fourth proportional to 127,999.92, 191,722.56 and 92,862 is: 139,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999.92 : 191,722.56 = 92,862 : x
  2. Step 2: Convert to fraction form
    127,999.92/191,722.56 = 92,862/x
  3. Step 3: Cross multiply
    127,999.92x = 191,722.56 × 92,862
  4. Step 4: Simplify right side
    127,999.92x = 17,803,740,366.72
  5. Step 5: Solve for x
    x = 17,803,740,366.72/127,999.92
  6. Step 6: Final answer
    x = 139,091.81

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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.