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Finding the Fourth Proportional to 119,661.13, 165,130.39 and 68,671.77

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Solution

The fourth proportional to 119,661.13, 165,130.39 and 68,671.77 is: 94,765.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,661.13 : 165,130.39 = 68,671.77 : x
  2. Step 2: Convert to fraction form
    119,661.13/165,130.39 = 68,671.77/x
  3. Step 3: Cross multiply
    119,661.13x = 165,130.39 × 68,671.77
  4. Step 4: Simplify right side
    119,661.13x = 11,339,795,818.73
  5. Step 5: Solve for x
    x = 11,339,795,818.73/119,661.13
  6. Step 6: Final answer
    x = 94,765.91

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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.