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Finding the Fourth Proportional to 119,785.77, 165,303.50 and 66,069.59

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Solution

The fourth proportional to 119,785.77, 165,303.50 and 66,069.59 is: 91,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,785.77 : 165,303.50 = 66,069.59 : x
  2. Step 2: Convert to fraction form
    119,785.77/165,303.50 = 66,069.59/x
  3. Step 3: Cross multiply
    119,785.77x = 165,303.50 × 66,069.59
  4. Step 4: Simplify right side
    119,785.77x = 10,921,533,313.70
  5. Step 5: Solve for x
    x = 10,921,533,313.70/119,785.77
  6. Step 6: Final answer
    x = 91,175.55

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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.