Home / 120,146.29-165,790.19-66,423.95

Finding the Fourth Proportional to 120,146.29, 165,790.19 and 66,423.95

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Solution

The fourth proportional to 120,146.29, 165,790.19 and 66,423.95 is: 91,658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,146.29 : 165,790.19 = 66,423.95 : x
  2. Step 2: Convert to fraction form
    120,146.29/165,790.19 = 66,423.95/x
  3. Step 3: Cross multiply
    120,146.29x = 165,790.19 × 66,423.95
  4. Step 4: Simplify right side
    120,146.29x = 11,012,439,249.87
  5. Step 5: Solve for x
    x = 11,012,439,249.87/120,146.29
  6. Step 6: Final answer
    x = 91,658.59

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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.