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Finding the Fourth Proportional to 119,500.79, 164,911.01 and 65,785.57

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Solution

The fourth proportional to 119,500.79, 164,911.01 and 65,785.57 is: 90,784.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,500.79 : 164,911.01 = 65,785.57 : x
  2. Step 2: Convert to fraction form
    119,500.79/164,911.01 = 65,785.57/x
  3. Step 3: Cross multiply
    119,500.79x = 164,911.01 × 65,785.57
  4. Step 4: Simplify right side
    119,500.79x = 10,848,764,050.92
  5. Step 5: Solve for x
    x = 10,848,764,050.92/119,500.79
  6. Step 6: Final answer
    x = 90,784.04

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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.