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Finding the Fourth Proportional to 119,251.80, 164,564.12 and 65,536.80

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Solution

The fourth proportional to 119,251.80, 164,564.12 and 65,536.80 is: 90,438.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,251.80 : 164,564.12 = 65,536.80 : x
  2. Step 2: Convert to fraction form
    119,251.80/164,564.12 = 65,536.80/x
  3. Step 3: Cross multiply
    119,251.80x = 164,564.12 × 65,536.80
  4. Step 4: Simplify right side
    119,251.80x = 10,785,005,819.62
  5. Step 5: Solve for x
    x = 10,785,005,819.62/119,251.80
  6. Step 6: Final answer
    x = 90,438.94

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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.