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Finding the Fourth Proportional to 127,610.76, 176,099.92 and 71,027.40

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Solution

The fourth proportional to 127,610.76, 176,099.92 and 71,027.40 is: 98,016.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,610.76 : 176,099.92 = 71,027.40 : x
  2. Step 2: Convert to fraction form
    127,610.76/176,099.92 = 71,027.40/x
  3. Step 3: Cross multiply
    127,610.76x = 176,099.92 × 71,027.40
  4. Step 4: Simplify right side
    127,610.76x = 12,507,919,457.81
  5. Step 5: Solve for x
    x = 12,507,919,457.81/127,610.76
  6. Step 6: Final answer
    x = 98,016.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.