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Finding the Fourth Proportional to 119,338.67, 164,691.61 and 65,627.78

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Solution

The fourth proportional to 119,338.67, 164,691.61 and 65,627.78 is: 90,568.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,338.67 : 164,691.61 = 65,627.78 : x
  2. Step 2: Convert to fraction form
    119,338.67/164,691.61 = 65,627.78/x
  3. Step 3: Cross multiply
    119,338.67x = 164,691.61 × 65,627.78
  4. Step 4: Simplify right side
    119,338.67x = 10,808,343,761.40
  5. Step 5: Solve for x
    x = 10,808,343,761.40/119,338.67
  6. Step 6: Final answer
    x = 90,568.66

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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.