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Finding the Fourth Proportional to 118,903.97, 164,083.11 and 65,187.81

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Solution

The fourth proportional to 118,903.97, 164,083.11 and 65,187.81 is: 89,956.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,903.97 : 164,083.11 = 65,187.81 : x
  2. Step 2: Convert to fraction form
    118,903.97/164,083.11 = 65,187.81/x
  3. Step 3: Cross multiply
    118,903.97x = 164,083.11 × 65,187.81
  4. Step 4: Simplify right side
    118,903.97x = 10,696,218,598.89
  5. Step 5: Solve for x
    x = 10,696,218,598.89/118,903.97
  6. Step 6: Final answer
    x = 89,956.79

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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.